GM Passkey Passlock VATS Bypass

PLEASE CLICK THE "SHOW MORE" BELOW AND SPEND A MINUTE READING THRU THIS - IT MAY HELP YOU MORE THAN THE VIDEO. THANKS!
This video shows how to bypass the anti-theft circuit on a 2007 Chevy Silverado (Classic) 2500HD Diesel. This probably should work for any full size 2003-2007 (classic) GM truck or 2003-2006 SUV. My guess is that even the smaller trucks and SUV's with this type of steering column will also be the same.
For information I have found on the different types of GM systems and relearn procedures please download this pdf: drive.google.com/file/d/0B_Jb...
You will need to remove the dash trim (snaps out - careful that you pull enough just to get it snapped away from the cluster and not crack or break the dash trim), knee panel (7mm screws at the bottom of the panel and snap/guides at the top) below the steering wheel and the metal wiring cover (10mm nuts) under the steering shaft.
Find the yellow and black small gauge wires coming from the top of the key cylinder that are bundled in with 7 larger gauge wires and three other smaller gauge wires at the bottom side of the steering column - these are in there own bundle. There is another bundle for the clock spring that runs with this bundle - DO NOT GET INTO THAT HARNESS as it contains all your steering wheel controls (if applicable) and your air bag. Cut the yellow wire and strip a section of the black wire to get a meter on. Strip both ends of the yellow wire. Put the black lead on the black wire and the red lead on the yellow wire going up to the key cylinder. Insert your key into the ignition and turn it to the "ON" position (do not start the vehicle - will only run for a second or so even if you do). Set your meter to ohms and get that reading. Go to radio shack and by resistor(s) that will match the resistance you read on the meter. Install the resistor(s) across the black and yellow wire going back into the vehicles I/BCM or ignition/body control module. Using a solder gun for this is best. Heat shrink or tape and secure the resistor(s) and yellow wire going back up to the key cylinder. You should be able to start your vehicle now using your remote start or any $3 cut key from Home Depot or other hardware store.
This bypass could also solve a GM vehicle mysteriously not starting or dying on occasion. I have a 2002 Suburban that would start and run for just a second and then cut off and it turned out the anti-theft circuit was failing and causing the problem. Once I installed this type of bypass, never had the issue again.
Feel free to post comments or suggestions and if you have any questions I will do my best to answer them.
UPDATE:
Since I posted this video, I have had several questions from people swapping steering columns; engines; PCM's; BCM's etc. and felt like I should add some more information here since I know I am not the fastest in responding to questions here and most of you out there want to get your vehicle going faster than my response in most cases!
Let me try to briefly explain how the VATS system works: When you insert the key into the ignition and turn it to on/start it sends a voltage/resistance signal to a BCM (Body Control Module) and the BCM tells the PCM (Power Control Module or often also referred to as the ECU ECM PCU Computer) to start the engine. If the BCM gets the incorrect signal from the ignition, it sends a message to the PCM to shut off the injectors. In some cases it will also shut off the fuel pump. So in most cases, that circuit between the ignition and BCM is breaking down at the ignition hall sensor and causing the BCM to send a message to shut the vehicle down. In a lot of cases you may only have to do a relearn procedure. You can download this in the link in the paragraph above.
So if you are doing any swapping (ie PCM's; BCM's; steering columns or other parts in the anti theft system) everything will have to match up. As an example - if you swap in a 6.6L Duramax for that gas guzzling 8.1L, you would use the PCM from the 6.6L but probably want to keep the BCM and ignition you have. The old BCM and ignition wont match what is in the 6.6L's PCM so you would need to do a relearn or have the ignition and BCM from the 6.6L doner vehicle. Three key components have to be on the same page: Ignition "Hall Sensor", BCM and the PCM. The relearn procedure should put all of these on the same page if you have no failing components.
And here is my disclaimer:
I hold no liability or responsibility in the information provided here or in the video. I am posting this information as guidance for people that are having issues installing remote starting systems or GM vehicles not starting or dying for no reason. If you use this information to bypass your vehicles anti-theft system it will do exactly as it says - bypasses built in anti-theft protection. Do this at your own risk and discretion.

[@seaturkey5608]

Anyone that has trouble starting the first couple tries but then runs normal or will start back up without problems if it was just turned off (specifically 4.3 or 5.7) may have a bad fuel regulator. Fought with a few vehicles for years before I came across the solution thanks to a very knowledgeable parts salesman. Have heard of these security problems but haven't encountered one myself, knock on wood.

[@bluntman99999]

Great video, actually showing the wires clearly. Thank you.

[@jamesstafford8250]

Mr Chris, it's a funny thing....the new ignition switch that was bought, failed ohms testing. Got a new one and everything worked out well. Thanks for your guidance and help. I greatly appreciated the response back. May you and your family have a blessed night.

[@ChrisBowling92769]

I figured it had to be up from where you jumped it. Your welcome and you and yours have a blessed evening as well!

[@calvinberry9934]

This video is so helpful.. I have this problem with my 2002 1500 Silverado.. This was a great help.. I'll get back as soon as I do this and see if it passes the VATS.

[@ChrisBowling92769]

Also try the relearn procedure as well if you haven't already dug into it.

[@Every1Has1]

Thanks Chris, that's good info to keep in mind

[@rocko2535]

Worked great. Thanks for your video. 02 Pontiac Grand Am

[@bobbyjones4205]

it drove me drove Me Badd couldn't figure it out couldn't figure it out thanks to you guys out there you my car runs again

[@jonathan99786]

been hitting my head against the wall for a year already and i think you just save my day. thanks a lot Chris Bowling. Just need to find a resistor now.

[@jimmiemorgan5875]

Lmm.. lol

[@mirzaahtisham1721]

hey i want to know about the 2002 jaguar x type anti theft system. my car key resister is not working or broken , i am unable to start it , is there anything i can do to start my car .

[@charityhorton1195]

Ok I need advice please! I have a 2005 Chevy Suburban that at first won't start after replacing the fuel pump and ignition sensor it will start but won't stay running. So we put on a new ignition switch and it still won't stay running. We final realized that every time we barely touch the steering wheel the car is shutting off. So now we think it's in the security system we did try to bypass it at the key ignition area. But bypassing it there didn't help. My question is try what you have in this video something you would recommend or is there another place we should try to disarm the system.

[@kingtimlocs6584]

thanks Chris, that was great help. its definitely been replaced before.

[@Mtrundy]

This is brilliant! Thank you so much, my GMC Sierra will be fixed yet!

[@derwindtd]

will this work on a 1998 gmc sierra 4.3 liter

[@gdbvobd]

Would love some more in depth help with passlock 2 I'm replacing my ignition and can't get the security light to stop flashing

[@nickmaglio1105]

I have a 2001 Chevy venture van. Replaced ignition switch. Now security feature wont let it start. Any ideas?

[@srt4x4]

How did you set up a relay for the remote start with that resistor bypass ... Did you ever get around to making that video? Or maybe a write up how to

[@homegrownluv8106]

Hello new to the channel. Just wanted to explain my issue. I had a stumbling and hesitation problem. Found out it was the head gaskets. Long story short I left my battery disconnected for 3 days while installing heads and waiting on them to be milled. After installing battery my injectors will not fire up. My secretary light will come on once as I turn the key and then turn off when I turn the key to start it it comes back on then off after I stop cranking the truck. Will this work for my 04 Silverado 4.3 please any help is appreciated. I do have a video posted showing my issue. Thx.

[@chrisbelts1163]

I bought a 03 avalanche with the ignition busted out of it .it will start by turning the ignition but will die in a second or two .will this fix my truck

[@rizbu5349]

riz bu 1 second ago Hi, I own a Saturn 2001 L200 I have had the security light flashing for almost two months with everything working in the vehicle including the remote key lock. One month ago I have had problems starting the car and the gas gauge and temperature gauge has shut down including the interior lights A/C, cooling fan and shifting gear, after disconnecting the battery for twenty minutes then everything turns on except the a/c and then shuts down again. It allows to remain starting, but without the gauges and lights,shifting gear and air non working. I want to try to disconnect the security passlock deferhent theft system. If so, after doing so will everything start working normally? My main concern is to get my gauges and cooling fan to work back on again.What is going on is it the BCM and can this be repaired manually?

[@heroknaderi]

I have a 2002 pontiac grand prix se and it has Pass Key iii. Im guessing this method you showed should work on it too.

[@michaelcadieux3139]

Hey chris, having no luck so far.. have tryed a few resistor values sec light still on, no start, do you know is the red w white stripe supposed to be 12+?

[@Al-mp7fv]

did u ever find out what the red wire does, if u can please let me know.

[@amanulol1225]

I have a chev.suburban 1999 it is showing anti-theft symbol?in my ipc cluster ..it cranks but no start.can you help me my problem?

[@obfuscated3090]

If the resistor trick doesn't work due to other Passlock problems, you can get an inexpensive mailorder tune to delete Passlock from your PCM, and can get Passlock signal spoofing modules from folks like Baker Electronix which send the enable signal normally sent by your BCM to the PCM. Resistor is cheaper than module is cheaper than tune. I've been researching Passlock all evening to determine how best to exterminate it from my K1500.

[@AndyBellPops]

Hey Chris …thank you so much… for this video …I got mine to start …but now I know how to find the correct resistor to install …well done….👏👏👏 abs/pops👨🏼‍🦳

[@cuiivy]

is this applicable to Pass Key 3+ (2007 CTS)?

[@evaristoortiz1192]

Hello Chris I have a 2004 Yukon SLT 2wd that won't start can you please help?

[@richardmontgomery7665]

I have a 99 buick regal gs I've had multiple problems with the vats and tried everything I can online to fix and still can't get the car to run

[@derwindtd]

will this work on a 1998 gmc sierra 4.3 liter

[@ChrisBowling92769]

Ten Second BuickGN sorry for the late response. Been a busy holiday season for me this year. Generally if the vehicle starts for a second or so and idles fine during that time it is VATS. From what I know and have experienced the only time it is a fuel pump or other fuel related issue is if it will not run at all. For whatever reason GM lets the vehicle start before it checks the key. If the key passes it runs if it does not match what is registered, it shuts back off.

[@thepunisherknuckleup5199]

O2 escalade stuck in thift mode lights blinking horn going off nothing when I turn it over

[@joycedavis9439]

I PUT A BYPASS PASSKEY WIRE FOR THE IGNITION SYSTEM ON MY 2002 GMC CANYON AND ITS STILL NOT START RIGHT SOMETIME I STILL HAVE TO SIT 20MIN UNTIL IT STARTS SO I NEED TO KNOW WHATS THE PROBLEM

[@GreylandWebb-wr1jm]

Will that work on a truck with out remote start

[@j-bobsgarage7535]

I have a 2002 duramax and I want to run a toggle switch for my acc on and a push button for my ignition. I do not need a special oem key to start my pickup so would I still need to bypass the VATS in order to run my custom ignition setup? my plan is to tap into the ignition wires so that I can run push button ignition along with the option to use my key. thanks!

[@ChrisBowling92769]

Not sure I fully understand - do you mean an ignition toggle and a push button start? ACC is a different position in the tumbler that only runs accessories and not the motor. Either way, yes you would have to do this since your key will not be turning passed the hall sensor that sends the "OK" to run to the PCM.

[@babygrobles3171]

I need your help bypass my 2010 antitheft

[@noahmartin4120]

Got gmc envoy slt 2003 I have problems a security lock it won’t crank

[@rushhomehealth4221]

I tried this on my 06 express, the security light is solid. I even got the pcm tuned to disable vats. Still can't get it to start. It cranks, but no start . The security light just solid. tried to relearn so many times, the security light wont shut off. The ignition switch is the only thing I replaced. Please help!

[@Calebnroy]

+Chris Bowling I have a 2002 yukon denali it starts than dies. The security light flashes. It may need a fuel pump but I don't want to go to the Dealership. How did you bypass your 02 suburban? I looked at my wires there is five wires just like yours but there is no black wire expect a orange with a black stripe.

[@ChrisBowling92769]

Same procedure just probably an orange/black instead of a black. Do the re-learn first and see if that will get you going.

[@renerogelio8948]

Hey bro i have 2003 chevy express but the 3 wire its difrent color can u tell me which one its the black the lef or the right or which one its the middle wire

[@ChrisBowling92769]

The only difference would be a orange black instead of black or v.v. The other colors are the same. You may be looking at the wrong group of wires

[@yordanorodriguez3599]

I have a 2009 g5 its has the security lights and won't rank,wha should I do?

[@samshaya365]

Hi, thanks for the Video. I was wondering if you could help me with something. I have 06 chevy Colorado 4cyl.2.8. And I'm trying to install a remote starter. Could you please tell me which wires should I use for bypass. Thanks

[@ChrisBowling92769]

Sam Shaya , I think those years use the exact same steering column if I'm not mistaken. So this should work provided you have the same color wires

[@stevenhenry1319]

Mine is showing 790 ohms where can I buy resistor?

[@barneywarwick9804]

i have a 95 Camaro V6 3.4 im having the same problem what could it be the computer my security system is flashing wen i turn the key over i did everything it said to do in the owners manual still got nothing i got lights and radio

[@jjservicecenternatucatac6344]

do you have an idea how can I fix my 2005 CHEVY VENTURE the security light on and the engine does not crank.....

[@ChrisBowling92769]

+jjservice center natucatac - not sure that vehicle is on the same platform, but look in the "SHOW MORE" and there is a link to a document that you can match your key up to. Also shows you the re-learn procedure. Most times the system only needs a re-learn.

[@danieldestin3850]

I got a Chevy Express 07 I changed the steering column, now the security light is blinking so it's start for 2 sec and stop.

[@aminmusse.7580]

hi chris do you know how to by pass anti theft system of citroen jumber 2001,and which color wires i should use thankx,

[@ChrisBowling92769]

Amin, sorry I am GM only - not familiar with any other makes.

[@goodstory5890]

I followed your procedure on my 2003 Silverado and it still doesn't crank over or start. Any other suggestions? What if there is no reading when checking the resistance between the yellow and black wires? TIA

[@ChrisBowling92769]

+S Cullen If it doesn't crank, then you have some other issues going on. Oddly enough VATS does not keep the vehicle from cranking. Any other info on when it started doing it or other symptoms prior would be helpful. Do you have an aftermarket alarm system maybe?

[@gefflynn7171]

Great vid! I have a remote start on my 88 1999 olds... do you know the wire procedure with a remote start to do this bypass for the security system? I have keys with the raised resistor and it will not crank with either key. Thanks in advance.

[@ChrisBowling92769]

Jeff, sorry I missed this. It would probably be the same but you would have to find some wiring diagrams specific for that vehicle. I am not familiar with what GM did in oldsmobile - like some Cadillac models have different stuff than what GM put in non-lux brands but some have the same as non-lux brands ie the Escalade is the same as Chevy/GMC truck/SUV platform, good luck.

[@gefflynn7171]

Chris, No worries, I actually found a fantastic resource to fix and bypass the issue. It is a module from New Rockies. GREAT product. Works like a charm! Peace newrockies.com/passlock-bypass-2/

[@djjairo760]

Hi I have a 2007 suburban, the problem first started this morning. I was attempting to replace my overhead DVD player screen. when i did, i needed to move the truck in the middle of the job, so i got to start it and it starts up and then shuts off just like yours did in the video here. Well i tried to do the 10 minute relearn and 30 minute relearn and no luck. i'd like to bypass the whole theft system, will your procedure here work with my 2007 suburban? it's the new body style like the 2007-2013. Any help would be appreciated.

[@ChrisBowling92769]

djjairo760 I would think that it should be similar. You would have to pull the it apart down there and just compare and see. My guess is they didn't change much. The cure all for most is a relearn or send the PCM off and have it removed. Below is a write up I found for 07.5-10 LMM diesel re-learn - a tad different than the '03-'07 classic. I would think it would be the same for all '07-13 GM Trucks/SUV's: 1. Turn ON the ignition, with the engine OFF. then 2. Attempt to start the engine (vehicle will not start) then release the key to ON,. Do not turn the key backwards, just release it. 3. Observe the SECURITY (padlock symbol) light. After exactly 10 minutes, it will turn OFF. 4. Turn OFF the ignition and wait 5 seconds 5. Repeat steps 2 through 4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the Passlock™ Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK. 6. Start the engine. The vehicle has not learned the Passlock™ Sensor Data Code and/or password. The vehicle learns the Passlock™ Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle. FOLLOWUP: If you have any trouble, common mistakes are not following the procedure exactly, and low battery voltage.

[@familylife153]

hi i purchased an alarm/remote start for my GMC Suburban 99 do I need the bypass module or can I use this to start the truck. thanks in advanced

[@ChrisBowling92769]

I don't think this would apply. you may have to do a bypass, but I do not think this is the same setup as 99.

[@ChrisBowling92769]

Not sure if you figured this out yet, but was looking at one the other day and it should be very similar, however instead of a black wire you may have an orange/black

[@FF54Vic]

I have a red/white,and Orange/black which one should I tie into the solid yellow.

[@ChrisBowling92769]

What year/make? I would think the orange/black without knowing, but you should see the resistance change from open to a value between the yellow and correct wire.

[@6themaker]

Thank you very much god bless you

[@Texaca]

hello, thanks for uploading your video. Is this a GM Pass-key III system or a 1 or 2? I think I've seen your video before.

[@ChrisBowling92769]

If you expand the description, there is a tech doc that will explain the 2007'ish and older systems, but the truck in the video is a 2007 classic with PASSKEY 3. There is a PASSKEY 2+ that I believe adds a transponder in the head of the key - this truck does not have that.

[@artguzman9916]

Hi chirs I got a 00 escalade and mine well do is works for days and out of no wear it well start then dye like in your video so ill leave it all day or few hours then it well work again I belive its my vats system security light does not flash your thoughts also on your video you put cut the yellow wire do I do the same for the black one then put the wire or just cut the yellow wire the just strip the black one like on video and then put the resister in

[@ChrisBowling92769]

You do not cut the black wire. Your '00 may be different in wiring colors as they changed things in '03 and mine is '07. However, with you saying the security light does not flash - does it come on and stay on when you have this problem? If the security light is not coming on, you may be at end of life on your fuel pump. How many miles on the escalade? I have a '97 Z71 that has the same motor as yours and I have replaced the fuel pump twice.

[@chakaleon2131]

I have a Buick century 2004 with the security light light on the car don't start and don't crank you think I can do this procedure thanks

[@ChrisBowling92769]

If the vehicle will not crank at all, then this is probably not your problem. Crank to me means the starter engaged and engine turning from the starter. If you cannot crank your motor there could be several other problems: Battery, Starter, fuse, relay, battery cable, solenoid, seized motor just to name a few

[@dougbobst1066]

I have an 05 Chevy 1500 no security light no power to windows or head unit. Lights come on when key is turned on some gauges go on but others do not. Starts just like yours did then dies a second or two later. Only codes showing is an Evap for emissions. Any ideas?

[@pl747]

ever figure it out? I know a guy that is having the exact same problem.

[@melissamoore5352]

I have a 2007 gmc sierra and when I put key to turn ignition the truck doesn't crank, but the gauges and light work. When I touch relay under the hood with a screw driver it cranks, but won't start. it is showing anti theft symbol, what do you think could be the problem?

[@ChrisBowling92769]

Melissa Moore Is it a classic body style (1999-2007) or the newer GMT900 series 2007-2013? I don't know of any factory VATS that cuts out the cranking, but I am not certain on the GMT900 series. If it has an aftermarket alarm system that works with the factory alarm system, that could keep it from cranking. Also be sure and check the crank fuse. Almost all vehicles have a crank fuse. You will also have fuses in an aftermarket alarm system also - probably underneath the steering column if it is equipped. I think the security light will always come on when you first start cranking, so it could be something else other than VATS.

[@dinifire1]

Chris any idea why I wouldn't be getting a ohm reading? I tested the meter also. And if I hook the wire back up the truck starts but it does have a intermentant issue where it will not start in the most incovient places.

[@ChrisBowling92769]

No ohm reading would indicate to me a bad Hall sensor, but can you clarify for me exactly what it is doing? IE starts for 2 seconds and dies, security light flashing, cranks but never fires over.

[@dinifire1]

Yes exactly

[@dinifire1]

Hall sensor meaning in the switch itself?

[@ChrisBowling92769]

+brandon belknap put you a 1000 ohm (1kohm) resistor in there and do the relearn

[@corymartin5663]

I have a 2004 tahoe. do you know how many ohms it requires?

[@ChrisBowling92769]

Sorry for the late response, but it does not need a specific reading but rather just something in range. I can't remember what the range is, but if you put 700-1000 in there it should work.

[@jamesstafford8250]

Mr Chris, I'm working on a 2001 GMC Yukon. HeHere's the issue I am having. Replaced the ignition switch because the customer said that the vehicle just stopped. He replaced the fuel pump. But when you turn the key into the on position, I get no turn signals, fuel gauge level, or volt gauge. However, when I take my power probe and jump the ignition switch on a pink wire, the gauges and turn signals all work and the vehicle starts with no issues. I have checked all fuses and relays with volt meter and relay buddy tester and everything checks out. I know that it's not the security system, but it almost seems like I'm loosing power out of the new ignition switch. Could you please give me a little insite as to where my problem may be?? Thanks in advance.

[@ChrisBowling92769]

Just my quick thoughts on the easy stuff first - you may have already done this, but... 1. How does the connector look at the ignition switch 2. did you meter the switch from the connector back to where you jumped the pink wire to make sure somehow the wire(s) haven't broke somewhere in between 3. So it turns to the ON position with nothing on the IPC, but does it crank 4. Check all the IGN fuses under the hood - namely the big ones that can appear good but meter bad 5. Do you have a known good ignition switch you can swap in there and check

[@michaelvelazquez3542]

any info on where to pick up a resistor? I cant find on anywhere

[@ChrisBowling92769]

+curtis Velazquez Radio Shack

[@jesusmascote5211]

Some one broke my immobilizer on the ignition switch on my ford lariat its a 2002 im on week 2 with out use i just want my truck running again help me

[@torrischappell7339]

1993 gmc vandura cranks got spark but anti theft is blinking

[@garystone8218]

i have a problem with my 2000 gmc 5.7 van not starting ITs been cutting off and now it never starts again. IVe replaced everything from a-z so now some say the pu is bad but is it the same wire on my switch that needs cutting loose to disconnect the pass-lock system? what color wire do i cut and what color wire do i tie the other end into? i need help please.i ordered a computer but haven't put it on yet i am at wits end...???i need help now?

[@ChrisBowling92769]

Going to have to have a little more detail to help you out on that - like what is A-Z? I don't want to list out the 26 things it could be if you've already done it...right now you're a long way from pass-lock...

[@gottabsleeved]

You think it be ok to guess the ohms for the resistor?i dont have a ohms reader.so i was think of just getting a resistor around 900 ohms for my 2003 express chevy 4.3 1500 van

[@ChrisBowling92769]

Yes, you'll just have to relearn it

[@gottabsleeved]

@@ChrisBowling92769 Just now i took a regular wire,no resister at all just a thin wire ran from yellow to black,did the 3 security relern waits,started right up.Before the relearns did nothing,the skinning the wires and bridging with a thin wire did the trick,now well see if it starts tomorrow.Thanks for the video

[@gottabsleeved]

didnt cut nothing only skinned the 2 wires then bridge with a thin wire.I got a 2003 express 4.3 my black ground was middle wire on ignition it was brown,other wire yellow to any body with this color wires that needs help,brown to yellow

[@evanbatts]

Hello has anybody done this with older year trucks i have a 98 Chevy 6.5 diesel that needs that

[@sammyguereca]

Hey Chris I have a 2006 chevy colorado i5, recently got into an accident(wrecked my front end), air bags deployed, did all my own repairs,, now my passlock system is giving me problems,, it won't start at all, no crank at all,, the lock symbol stays on, doesn't blink,, any info ? In desperate need

[@ChrisBowling92769]

sammyguereca Sorry for the late response - Did you figure it out? No crank is generally something else unless there is an aftermarket alarm system in it.

[@jeremyhernandez6282]

Can I put a toggle switch to connect my yellow wires. Would that help instead of this process?

[@ChrisBowling92769]

No - it cannot be 0 ohms which is what a switch will do.

[@jm1mccants]

Hey I have a Pontiac aztek that's in security mold it runs fine but nothing works as far as the windows or anything on the dashboard everything stopped working when it went into security mold, well bypassing help me

[@ChrisBowling92769]

Wow - I don't know about that. I would not think that VATS has anything to do with gauges or windows. Generally speaking those things are independent from GM VATS. Also - If your gauges are not working, not sure how you can trust the security light. My guess is there is a problem with data or maybe power to those systems. It would be a cheap thing to try I suppose, but I would look at those circuits and start chasing out the power and data wires to see if they are good.

[@user-uj9hj8fx1w]

I tore my ignition out because it locked up how do I bypass my anti theft without a key

[@antonioserna2012]

hello friend what resistance should i use for Silverado 2006 thanks

[@ChrisBowling92769]

Try 1000 ohms (1k)

[@tonycesare7251]

I took apart everything the same as your video, but I'm not getting an ohm reading when I turn on the ignition. Any ideas?

[@ChrisBowling92769]

Sorry Tony Cesare for the delayed response - If you are not getting anything, the hall sensor may be bad or the circuit has been open somewhere. Is the vehicle starting?

[@dalegarrett1974]

You turning it all the way to start or just ignition?

[@tensecondbuickgn]

I have an 02 Silverado 4.3L that seems to have a Passlock issue. It starts and then immediately stalls after 2 seconds. It will stay running on carb cleaner so I know I'm on the right track. Have you ever heard of other components failing or is it typically the key cylinder?

[@HBFTimmahh]

i have the exact issue on a 98 Astro 4.3. since it got cold out (*below 45* F) this has been what mine is doing. starts and runs great for 3ish seconds and then is shut down. Ether keeps it running as well. I do NOT get a security light at all. but when it starts and runs as it should, i see the security light come on after the start, and go out with the rest of the security lights. I will be doing this bypass likely tomorrow if I am not working.

[@ChrisBowling92769]

Both of you guys sound like a VATS/Passlock/Passkey issue. All the ether and the carb cleaner are doing is just supplying a fuel source and keeping it running after the VATS shuts of the fuel rail/pump.

[@HBFTimmahh]

Chris Bowling Totally Agree, trying to figure out the significance of the NO Flashing Security Light, as I presume it will lead something telltale, like a bad connection at the BCM ect. Not sure where the BCM is located in my 99 Astro. but I am trying to do the resister bypass atm, without much luck I am afraid.

[@ChrisBowling92769]

Does the security light ever come on? Most of the BCM's are located under the steering column - but I wouldn't know about that vehicle.

[@HBFTimmahh]

when it starts and then continues to run as normal, yes, it comes on, then goes out with the rest of the dash lights. yesterday, when I was trying different resistors, I had one that when I turned the key on to do the 2nd round of programming, the security light started to flash on me. In my foolish wisdom, I decided to try the 10K resistor, instead of continuing with the relearn procedure. Now am still where i was. but now I am trying to get the right resister back in place that tripped the security light to start blinking. Last saturday, (10 days ago) it started up in the evening and rand fine, at which time i was able to verify the security light indeed came on with the initial start, and went out with the rest of the idiot lights once running. I tried it a few different times that night and the light came on every time it started and ran (4 or 5 times throughout the evening). but the next am, it was cold again, and the security light didnt come on, and it did its start, run for a few seconds and get shut down. I think the fact the light is not coming on, is because it it in full theft lockout. therefore, the light is not tripped as normal... but this is just my presumption at the moment. I know in 97% of Passlock issues. the security light will blink, as I had it doing yesterday with the one resistor.

[@jasonzelisko9822]

I have a Canadian 03' Chevy Impala and the anti-theft system keeps shutting down my car after 30 mins to 60 mins.. Then I have to wait 30 mins for it to start again... Any ideas or videos or links for my Canadian 03' Impala ( disabling the anti-theft device)

[@ChrisBowling92769]

Not real sure about that. I am not familiar with any non-domestic programming of VATS, but unless Canada requires something different, my guess is there are no differences in the programming. Is it idling that long or driving down the road and shuts off? I just don't think any AHJ would require something like that in a VATS to shut down the vehicle in either case - I try and look at like what good what that do given the fact a criminal would get 30-60 minutes of driving? You can try the re-learn procedure and see if that helps. Otherwise, some other common failures that produce your symptoms are: Fuel Pump; Fuel Filter; Vapor lock; overheating; Faulty wiring; crank/cam position sensors to name a few. What kind of codes are you getting?

[@KhAN95240]

So I just bought a theft recovery 99 GMC Sierra 1500. The cylinder lock and cylinder housing is damaged. I found a replacement steering column with key. For me it's just cheaper to buy the whole column otherwise I need to get a cylinder lock + cylinder lock housing. If I swap in the new column and do the 30 minute relearn procedure, will it work for me or am I just waiting my time?

[@ChrisBowling92769]

Yes it will work if you have no other issues. just make sure you get everything plugged back in because the BCM has to see the new value and learn that when you go thru the process

[@KhAN95240]

Chris Bowling Thank you, sir.

[@johnvanderbossche5565]

Hey Chris Bowling I have a 99 chevy Silverado , Tried the bypass however I'm not sure the wires to use I have a red/white,Yellow and orange black from the passlock sensor. The yellow is passlock signal sensor input,the red wht is 12 v ref and the orn black is the sensor ground, the truck starts for 2 seconds and shuts off security does not display nor does my 4x4 or service engine soon lights (think its a faulty instrument cluster) not sure if the security light not working also effects the vats system I have 2 different wire diagrams because the 99 (late year) is when they initially changed body styles one diagram shows it does indeed affect it the other shows it does not however the wires for the one that says that it is affected for the security lamp do not exist in the cluster wiring. This is ultra annoying.

[@ChrisBowling92769]

+John Vanderbossche Sorry about the delayed response - were you able to figure it out? I don't recall the IP light having to work for VATS to pass and send a "start and run" command to the PCM, but I have been wrong before. At any rate, I think you should be using the orange black and yellow if you haven't figured it out already.

[@mikedavis2768]

John Vanderbossche

[@mikedavis2768]

John Va nderbossche

[@jakelevy7268]

is there different places to accomplish this? I have a 95 impala ss an we determine that was my issue is key wasn't working rite. we did this same thing to it. however with the wire loom unhooked the car started, leads me to belive the previous owner had already done it. help plz

[@ChrisBowling92769]

Jake Levy certainly. most wiring from security goes to a body control module. not sure where that is though on that vehicle. check AutoZone website with your vehicle info and look in the repair help section for wiring diagrams. might help you locate it

[@Shawtycuz]

I got 2002 Firebird base model, with Vat key system and was wondering would it be same set up as your truck!!

[@ChrisBowling92769]

It should be. You may have an orange black instead of black.

[@ChrisBowling92769]

Shawtycuz A quick look at the wiring and it may not... Do you have a pellet in the key?

[@ChrisBowling92769]

Shawtycuz Download this pdf and tell me which key you have: drive.google.com/file/d/0B_JbzhLZuS5XOVhqLTREOUlFTDA/edit?usp=sharing

[@edgardoortuno9406]

Good night friends to see who can help me I have a chevrolet 1996 with passkey system and I lost the key and in desperate intendantes to ignite it, in security system I ended up blocking it full x now I got the key but I do not know the step to unlock it if someone knows the Topic and know how to help me would be greatly appreciated.

[@michaelcadieux3139]

Hey chris i have an 01 blazer similar issue, cranks for a second no start security light on, yellow bcm wire only shows about 1.9 volts any advice?

[@ChrisBowling92769]

Michael Cadieux I think the voltage reading is going to be a 5V reference that will fluctuate. But try the the re-learn process first and see if that helps. If not, you would need to find the orange/black (I think that would be the correct color) and cut that yellow wire and try to get an ohm reading. If you can;t get a reading then you could probably get anything around 800 ohms put in there to relearn.

[@michaelcadieux3139]

Yea i have tryed the relearn about 5 times, no luck. Im gonna try the resistor today seems around 400 ohm on mine.. hope it works..

[@michaelcadieux3139]

Im not getting any continuity on the key side tho which worries me..

[@allanrouse7767]

Chris will your bypass work on a 2002 gmc sierra.thanks Allan

[@ChrisBowling92769]

It is very similar to this if not exactly the same

[@ChrisBowling92769]

Only difference is you probably have an orange/black instead of a black

[@ruchyackerman564]

I am having lots of problems hith my 2000 chevy astro an avrage 3 times a week it wan't start security blinks (I turn th ignition to acc and wait 10 min till it stops blinking than it will start up) How can i bypass it there are no resistor on the key ) Thanks

[@ben79701]

Thanks man this help me out

[@edprothero4290]

I have a 2005 monte carlo and I need to bye pass the pass lock and dont know if its behind the radio or in the steering wheel I need help

[@aaronbeardelores1945]

Did u find out how to do this

[@tdmoore5016]

I got a 04 Yukon can it be done same way.I have some old radio shack resistors can I just wire them in. The security system is shot

[@tdmoore5016]

This one mechanic done rip me off 700 dollars and still no run

[@ChrisBowling92769]

Sorry - have not been on KZbin lately - yes this will work on the any GM truck/SUV 99-2006 (2007 Classic). If the truck is disabled, I would just sent the ECM to a tuner and get it tuned out. You can find someone to that for $50-100 plus shipping.

[@billdollarmovie140]

Do you know if the 2002 Suburban is the same thing as the 2002 Escalade VATS?

[@ChrisBowling92769]

yes it is

[@billdollarmovie140]

if you do the correct ohm ignition bypass on a 2002 escalade, but the alarm is still on. Will it run and drive?

[@ChrisBowling92769]

No, anytime VATS is enabled for any reason, it will not run

[@billdollarmovie140]

three fuses, no alarm, everything else running

[@Geek2freak337]

Will replacing the ignition control switch fix this issue without cutting wires? Or what parts need to be replaced to fix this issue?

[@ChrisBowling92769]

No it will not unless the hall sensor comes with what you buy. It is the hall sensor and software that have issues. When you turn the key cylinder, new or old, it passes the reading to the BCM and the BCM passes it to the PCM.

[@Geek2freak337]

+Chris Bowling I don't get any ohm value using the yellow wire to the pass lock sensor and the orange/black stripe ground wire in my 2002 Silverado 2500hd 6.0l automatic. This year there is no black wire for ground. When I turn the key it reads overload. Other methods online mention using a within range resistor and allow the PCM to learn this resistor as the new resistance. What do you suggest? My new PCM can not relearn my pass lock. I have a no start but cranks and solid security light.

[@ChrisBowling92769]

Put a 1k ohm resistor between the orange/black and yellow and try to relearn. The PCM will not relearn anything until it sees something within range. A steady security and crank could be the startup it goes thru, can't remember. But be sure the resistor goes across the cut yellow wire going back to the BCM and the orange black (don't cut the orange black, just strip some insulation back and wrap the resistor lead around it)

[@Geek2freak337]

+Chris Bowling I have found an article that mentioned if the keys are worn and/or the tumbler and/or housing was faulty that a resistance might not be obtainable. A 1000-2200 ohm resistor was recommended. So I found a 2200 ohm 1/2 watt resistor, wired it in and did the relearn. The truck fired right up, I drove for several hours. Pulling over to stop and restart the truck. All successful. I consider my problem fixed. I did replace my PCM due to a few pin outs not receiving voltage/no current. All fine now. Thanks for your video and your advice. A cheap and easy fix to a very common issue. Whether GM will admit it or not. Both dealerships declined knowledge of the issue.

[@ChrisBowling92769]

You may have to relearn it now and again, it is not only the hall sensor but the software as well. And yes, GM will not admit to any of it and I am certain the dealerships have also been notified by GM not to acknowledge anything about it.

[@justinwells14]

I have a 2001 silverado had a 4.8 changed the 4.8 to a 5.3 also used the 5.3 harness and ecu, want start; turns over fire it's like it fires off and dies, any help would be awesome.

[@ChrisBowling92769]

It is the BCM from the old truck sending the wrong "password" from the old BCM to the new PCM you installed. You will have to relearn the PCM or have it programmed out.

[@ChrisBowling92769]

This bypass wont help you unless you know what the PCM is wanting to see from the BCM. If you have access to the doner vehicle and the key, you could get that resistance measurement and then possibly do this.

[@kristenward5589]

what kind of resistor do i need and where can i find them

[@ChrisBowling92769]

You should try and match what is in there now and you can get them at Radio shack. Try the re-learn procedure before you go to the trouble.

[@TheKriscrow100]

OK. my cad 96 will start and run fine except for the blinking lights and sounding horn . how do I stop this. I have no door key

[@ChrisBowling92769]

Different setup there - I am not familiar with what Cadillac was doing in that era. Look in the SHOW MORE for a link to a doc that may show you which system you have and you can do some searching on that system

[@ortega2118]

Will this work on a 2002 yukon I installed avital remote start with db3 module and it did not want to remote start

[@ChrisBowling92769]

Yes - you have to do this or program out the Anti-Theft from the PCM in order for a remote start to work

[@ortega2118]

@@ChrisBowling92769 okay im going try to put a resistor on see how that works

[@mundomacias1206]

Hi I have chevy suburban 1998 4/4 whit the security problem it turns on a few seconds then die help please

[@ChrisBowling92769]

Not 100% certain, but I think it would be the same, but it would be an orange black instead of black.

[@brianjones2228]

Hey Chris, Attempting to install a remote start in my 99 bonneville. I have all the wiring diagrams and got everything wired up and then when I went to use the remote start it would turn on the power (blower, lights, radio) but the car wouldn't crank. So, Im thinking VATS. I have the resistor in the key and getting the resistance reading tomorrow. Also, i know my antitheft wires are both white inside an orange tube. You side in your video that you were going to wire it up so it would only bypass the VATS when you used the remote start. I was just wondering how you ended up wiring your relay. Im not really familiar with relays

[@brianjones2228]

also i found this www.bulldogsecurity.com/bdnew/newsite/pictures/pdfs/773%20STARTER%20KILL%20to%20IGNITION%20SWITCH%20HARNESS.pdf but I dont know what the immobilizer output from the module would be, and what exactly "key side of starter" and "Underdash side of the starter" stupid question i know. Is it just where ever you make the cut the key side is above and vise versa.

[@ChrisBowling92769]

Brian - this diagram is the relay that immobilizes your starter or disables the starter from cranking unless your alarm is in the "disarm" mode. In a remote start system, you will have an additional relay (which can be internal to your alarm system or external like the diagram you reference) that cranks the motor without a key. A few things have to happen for your vehicle to start - Ignition, crank, and fuel. So in most GM VATS the system only disables fuel. So my first thought is that the starter immobilizer relay or your crank output to the starter is not wired up correctly. You would need to meter the coil side of that relay (85 and 86) and/or the crank output to make sure it is changing state when you initiate a remote start.

[@adamwaugh5621]

you think it would be the same on a 2000 Chevy truck I have a dually security light blinks and won't start

[@ChrisBowling92769]

I think GM started using this same setup in the HD trucks prior to swapping over in 2001 to the newer body style. it may be that instead of a black wire you may have an orange black. I'm not totally sure about that, but you could certainly look at the wiring. also, try the relearn procedure listed in the PDF that matches your key.

[@tateclark4171]

Can I just hook the yellow to the black without a resistor?

[@ChrisBowling92769]

No you cannot. It won't work with 0 ohms

[@junejones9757]

99 ford taurus I put a new ignition switch and the theft light would not let it starts how can I buy pass

[@ChrisBowling92769]

Sorry, nothing against Fords, but your going to have to find a Ford guy - have never owned one.

[@iboomark66]

Hi Chris thanks for Great video my question is can I connect yellow wire with black without a resistor?

[@ChrisBowling92769]

IBO K No you cannot. That is zero ohms and it will not work.

[@iboomark66]

Chris Bowling thank you for the replie today I try with 910 ohms on GMC sierra 2004 and didn't work and I give up.

[@ChrisBowling92769]

IBO K that should work. But you have to relearn the PCM when you or a new resistance in there. It's about a 30 minute process

[@iboomark66]

Chris Bowling I see so I have to relearn it. Ten minutes on ten seconds off for three times?

[@dinifire1]

chris I tried that resistor and the relearn twice and didn't work any other ideas

[@ChrisBowling92769]

Tell me exactly what is happening. Send me a picture of how you wired in the resistor. Either thru Google+ it jcb92769@Gmail. com

[@harryjones8275]

Here are some of the Resistor Values for the Ignition Key Security problem. I copied this from another user on KZbin and only provide it so you have a reference. Combining resistors to get the approximate value will work as well. Seems that the values are not exact and a 10 % tolerance is probably OK.. Good Luck. Getting a cheap breakout board will simplify the whole process. These are in ohms. 402, 523, 681, 887, 1130, 1470, 1870 , 2310, 3010, 3740, 4750, 6040,7500, 9350, 11801.

[@ChrisBowling92769]

Thanks for the input!

[@sleepyskaterzzz]

Harry Jones mine was 1238ohms, connected a 1kohm and 2x 100 ohm resistors (1amp, tried 1/4amp but they didn't work for me) in a line and used that. works good after a relearn

[@stevecarder3581]

04 SILVERADO: Everything works except the keyless entry. It just stopped working. I replace both fob batteries and reprogrammed - no luck. I cannot figure it out. The previous owner installed a autostart that worked with the factory keyless back when it was new, but has worked up till now. Any thoughts advice much appreciated!!

[@ChrisBowling92769]

You've tried this: How to Program Keyless Remote for GM trucks and SUVs - FREE

[@derwindtd]

whats happening is my anti theft sent code 1626 theft deterrent fuel enable signal lost /also i have no power going to my instrument cluster

[@TheDennis4321]

i have a 98 bravada every video i see has the same concept but as im trying to locate my ignition i found what to be the three wires im looking for right by the ignition but there seems to be something already there looks to be factory my question is to i put the resister before or after this fuse looking device

[@ChrisBowling92769]

I am not familiar with that vehicle, but if you had a picture or video of it?

[@ChrisBowling92769]

Try a Google search on how to relearn the security system for your vehicle. I am not familiar with the 2007 and up.

[@marcoblanco3098]

Damn I need help on my 2001 silverado it won't start just for a second then turns off

[@ChrisBowling92769]

Read the "SHOW MORE" part under the video - lots of good stuff in there to try. Download the "re-learn" procedure from there and try that also. If it is starting a few seconds and dying, it is definitely a VATS issue

[@marcoblanco3098]

I already fixed the problem I did a by pass thanks and your video help a lot