E FAN UPDATE / AC upgrade kit BP Automotive / nbs silverado 2000

[@JacksBiotches]

Thanks for taking the time for correcting the issue with the a/c it helps to follow your steps than chasing my own tail.

[@CheeHooGarage]

Thanks for watching!

[@johnnyramirez8944]

I used it as you show in the video about the cable before my compressor works but now it doesn't work it needs to be something to the computer

[@LJimenez0185]

I did everything on the first video and the fans worked great! Then I had the same issue with the accumulator, but I live in the Midwest so I was not getting heat inside the cab and I finally had the time to fix it I turned on the heat and I notice no air was coming from the vents and was the same issue the evaporator was frozen I did what you did and man it worked! I really appreciate all the info on your videos! I have efans working great on my 99 and I have heat!!! Thanks you so much I own you a beer!! 😬😬😬

[@CheeHooGarage]

Glad I could help. Thanks for the support 🤙

[@gerardolopez5875]

Any diagram? For new rewires

[@michaelwade9675]

Man I just did this last weekend on my 2000 Sierra every thing works perfect now after wiring the a/c LP Switch this way.

[@CheeHooGarage]

@@michaelwade9675 great to hear 👍

[@Titian92]

Thank you for making this video been waiting to see the results. I bought the kit and will be trying this as soon I drop my engine in the truck.

[@CheeHooGarage]

Thanks for the support 🤙

[@compdude957]

So I did this exact swap and actually your video is what I went off to do it. I have a 2002 Silverado 2500hd and had this same exact issue when I was done. Compressor never cycled off low pressure. Found that same fourm and ran that wire from low pressure switch back to pcm and it worked perfectly. 99-02 are all wired the same so they all will have this no cycle issue if you don’t connect the low pressure switch according to that diagram. Great video and glad you fixed yours as well!

[@CheeHooGarage]

Right on bro. I feel like more people need this info.

[@ricks5468]

I also have a 2002 2500hd. I put the bp sensor as well. My tuner had the serial cycling and it was working, but my AC was freezing over. I did the c2-55 swap and hooked c2-17 wire up to the black wire on the plug at the accumulator but now my AC doesn’t come on at all. Took the truck back to the tuner had him change it to analog setting and also tried analog cycling also, neither worked. Any ideas?

[@CheeHooGarage]

@@ricks5468when you hook the wire up to the sensor, it needs to go to the sensor only and to ground. The PCM is the new ground. If it's still attached to the ground wire, you're telling the computer not to cycle the compressor on

[@Nor-pe2mh]

is there any way to make the fans work with the Ac, without having to buy the Ac upgrade kit bp?

[@CheeHooGarage]

You can wire it to the compressor clutch

[@Nor-pe2mh]

Green wire to the green wire on the compressor clutch harness? Thank bro I apreciatte🙏🏻

[@rickvalencia3825]

Great vid! I’m doing this swap now on my 2002 Silverado. Did you pin wire 33 on the red connector? I am using a factory Efan harness I grabbed from a junkyard. I have the green wire pinned to the 42 blue connector. Was wondering if you did that also? I noticed that there was already a wire in the red 33 location I am reading that this is for the recirc door.

[@CheeHooGarage]

@@rickvalencia3825 yes. Remove the existing wire

[@rickvalencia3825]

Thanks Braddah! 🤙🏽

[@theblazingrevolver4719]

​​​@CheeHoo Garage I have not had any problem in my 02 cadillac escalade, the same installation as yours, the only thing that I did not bought the BP automotive kit, I took it out from a 05 cadillac escalade from a yunk yard, when I turn on the front ac only The compressor cycling on and off normally and when I turn on both front and rear ac at the same time the compressor stays on all the time and the accumulator and evaporator do not freeze up

[@Sxvaqe-_-]

How did you take out pressure sensor off the 05 Escalade I'mma do same at a junkyard for e fan harness but I wanna know how to remove sensor

[@theblazingrevolver4719]

@@Sxvaqe-_- just unscrew it, it is located by the right side of the radiator

[@opxmali]

i’m glad you did because i just watch the video where you actually did it and now this came up

[@criskyro]

Great video! Prepping for my e fan swap and this information was very helpful. Good Lookout, From Dallas Tx

[@CheeHooGarage]

Thanks for the support 🙏

[@dannyej89600]

Everything still working good? About to do this on mine.

[@CheeHooGarage]

yup. i drive it every day

[@juanvela2229]

Thanks for the info. Doing this to my 02 gmc. Have bought parts but haven't pulled the trigger. I need ac here in Texas! Don't need issues with electric fans if that's going to be a problem

[@CheeHooGarage]

I hear you!

[@shaneburkhart9353]

Thanks I just got all this stuff because of your last video just got it put back together yesterday don't even have it tuned yet guess I will pull the plugs off the ecm again and switch thoes wires thank you for the info

[@CheeHooGarage]

Try seeing if your system works with the tune first.

[@shaneburkhart9353]

It's a 2000 gmc sierra did you use the wiring diagram from BP automotive or did you use the other KZbinrs wiring diagram that gave you the idea I used BP black wire blue pcm connector 49 and gray wire blue pcm connector 8 and red and black stiped wire red connector 14

[@CheeHooGarage]

@@shaneburkhart9353 i used the bp instructions

[@shaneburkhart9353]

Ok cool thanks just wanted to make sure we are the same on all of it CheeHoo Garage

[@Worldonecometo]

Well done covering the steps on the install video. On HP tuner, is there an option to run only one fan when you turn on the ac? Fan one seemed to do a pretty good job of keeping the coolant temp steady, even at idle in the garage. I would think, driving down the road at speed and the first fan on, you wouldn’t need to run the second fan to keep the ac blowing cold. I’ve been working on these trucks for 20 years and 200 degrees, second fan on, seems a little low. I live in the East Bay Area where we get 100+ summer days and my ‘01 Silverado sits steady 200 degrees operating temp. I plan to upgrade my truck to electric fans, I’m aiming to set the second fan to come on at 205 degrees. My truck only has 83k miles on it and the oil stays gold, very healthy engine. Iron blocks need more heat to get everything sealed up tight, if the block was aluminum I’d be keeping the temps lower, as I do with my ‘17 Chevy SS.

[@CheeHooGarage]

200 is low. The factory settings are 205 for fan 2. When I had it set to 205, I'm pretty sure it never came on. I set it to 200 just so I could verify it actually working. I'm probably going to change it back to 205, but that's what I was trying to prove to the guys that wire fan 2 directly to the clutch, it's really overkill.

[@paradiceboyz1]

Thanks for taking the time to do this video and for sharing the link to the forum.

[@CheeHooGarage]

Thanks for watching 🤙

[@layito11]

Did you pig tale the black wire of C2/17 to the black wire of the low pressure switch of the a/c accumulator or you only left the wire of C2/17 alone with the pressure and not the original black wire of the low pressure switch of the a/c accumulator. If can help please I will appreciate a lot. THANKS 🙏🏼

[@CheeHooGarage]

I cut the black wire on the low pressure switch and replaced it with the dark green from c2/17. So instead of the low pressure switch going straight to ground, it goes to c2/17. I hope that makes sense. Lmk

[@layito11]

@@CheeHooGarage and with this set up it should run as factory and no iced on the a/c lines right. B/C I have a road trip soon on my 01 Denali from Atlanta to California with the family, some places with be so hot and I what to keep the family cool with the a/c like factory. Thanks for the help. 🙏🏼🙏🏼👍🏼👍🏼

[@Sxvaqe-_-]

​@@CheeHooGarageso the TXL wire you used to connect to ground low pressure sensor and green wire together so it ran through engine cover ?

[@CheeHooGarage]

@@Sxvaqe-_- that's how I did it

[@Sxvaqe-_-]

@@CheeHooGarage thanks 👍

[@fknwayne_]

Howzit bradda, you think you could tune my truck to read the e fans if I bought the swap?

[@CheeHooGarage]

Sorry bro I don't work on other peoples cars. Too much liability.

[@fknwayne_]

No worries bro all good 🤙🏽

[@sergiomendoza602]

Good video thanks was wondering what was the final setting of fan 1 and fan 2

[@CheeHooGarage]

I changed fan 2 to 205. Fan 1 still the same

[@sergiomendoza602]

Cool thanks

[@brendan747]

i have an 02 with the same conversion kit from BPauto. my fans very RARELY kick into high. cammed stalled 6.0 in a cclb 2500hd on 10” lift and 14 wides.

[@CheeHooGarage]

That's great. I switched my high speed back to 205 and they hardly come on as well. I'm pretty sure that's how they were designed to work. I only need high speed if it's absolutely necessary. Thanks for watching 🤙

[@brendan747]

@@CheeHooGarage now if only my tired 230k mile compressor could make high enough pressure to survive in texas. i thought i recognized that accent in the first video, hawaiians are rare on youtube. local boy 🤙🏼

[@jamesburgan4448]

I have the same issue. Installed the BP with Ac kit on my 02 with 6.0 swap and my fans always run on low also. I can feel a relay ticking above the fans on the cover but it never kicks in high. Is there a way to wire a switch so I can manually turn the fan on high. I also have not taken my truck to the tuner to have that adjusted in the tune yet either. When I start my truck my ac compressor will short cycle until the fans come on. I hate it

[@zl9148]

​@@jamesburgan4448my 2002 silverado is the same once the truck is warm everything work good. But for some reason after a while once warm the relays start ticking I thought it was my lifters but I pin pointed to the relays have no idea why? But fans work properly never get hot enough to kick the high fan

[@mayito123j]

Red 55 moved over to red 17, then red 17 to black ground at pressure switch. Tie into black. Or cut black and connect red 17 to it?

[@CheeHooGarage]

Cut black and connect 👍

[@mayito123j]

​@CheeHooGarage Cut black completely and leave the other end hanging or are we tying into it?

[@estebanloya5086]

If I do the swap this way. Am I going to have to tell my tuner how I did it so they know what settings to put ? Or is it all the same

[@CheeHooGarage]

You should always tell your tuner what you did to get the right tune. But honestly if you're tapping in these wires to the same terminals then it should be the same

[@Thatruined4x4]

I have a 01 truck and I’m getting everything ready for the e fan swap. Is the bp ac upgrade kit still needed if I go the route you did in this video?

[@CheeHooGarage]

It is, if you want the fans to work with ac

[@codygentry9472]

So say you dont want the ac to run the fans what will happen? Does the ac still work just not as cold? can the fans keep up without knowing what the ac is doing? Will the ac work at all?

[@CheeHooGarage]

@@codygentry9472 in my opinion... I think with the fans on at what ever temperature you set, the ac would work just fine. If you think about the clutch fan, it doesn't adjust at all to ac. If it's hot enough that you turn your ac on, it's probably hot enough for the fans to be on. Hope that makes sense

[@DAREALCOUP]

What operating system do you have? What operating system do you need to have for it to work with the hookup like your initial video, without having to do the extra wiring like in this video? I have a 2001 GMC Sierra C3 6.0L

[@CheeHooGarage]

I'm not sure of the exact operating system numbers but they're out there in the forums. Yours might have it.

[@DAREALCOUP]

​​@@CheeHooGarage ok. Explanation for the fixed and variable system lies in the orifice tube. Around 01 they switched to the larger style orifice tube for better refrigerant flow. The bigger fixed orifice tube (17mm) has a fixed flow of refrigerant. While the smaller orifice tube (13mm) is a variable flow, which adjusts the flow of refrigerant to help with cooling at idle speeds. The smaller (13mm) orifice tube also comes in a fixed flow as well. They came out with the smaller (13mm) variable flow orifice tube as an upgrade for the smaller orifice tube system before they just decided to finally switch to the bigger (17mm) orifice tube for better flow to help with low speed cooling. A possible solution would be to find and replace your ac liquid line with one that uses the smaller (13mm) orifice tube and use a variable flow orifice tube. That way it'll work with the analog settings without having to do the extra wiring

[@LJimenez0185]

Hey bro I’m back to comment hope you can answer my question, so I did everything you explained on the video and I though it was working because I did it on the winter I was having issues with my heater the ac compressor was engaged all the time and was not letting hot air to get into the truck because the accumulator was frozen, so I did what you explained on this video and my heater was working great, now this summer my ac compressor was not engaging so I revert what I did and the compressor started to work again, but now my problem is that the accumulator is not getting frozen it is the evaporator inside the cab that’s it getting frozen and after 30 minutes of driving I’m not getting cold air I guess the frozen evaporator is not letting the air go through, my compressor is engage all the time is not turning off at all is there any reason why this is not working for me? I did everything you explained on the video and is not working! 😢😢 hope you can help me thanks!

[@CheeHooGarage]

You said you did everything I did and it WAS working. Then the compressor wasn't coming on so you "revert" what you did. I would change the pressure switch on the accumulator. Right now it's working because it's not even looking at the pressure switch. That's why it doesn't cycle off

[@LJimenez0185]

@@CheeHooGarage I replace both, the pressure sensor that came with the BP automotive kit and the low pressure on the accumulator 🤷🏽‍♂️🤷🏽‍♂️ my truck is a 99 so maybe there is something weird on my computer, before I did what you did on this video I had the same issue with the accumulator getting frozen, but when I do the wiring you did on this video my compressor is not getting power just ground

[@CheeHooGarage]

@@LJimenez0185 where did you put the c17 wire

[@LJimenez0185]

@@CheeHooGarage c17 to c55 and c55 to the ground on the low pressure switch correct?

[@CheeHooGarage]

@@LJimenez0185 c55 wire to c17 slot. C17 wire to black wire on switch after you cut the wire

[@jefffleming1743]

I got the same issues you did checking to make sure yours is still working properly before i try this

[@CheeHooGarage]

It works bro! At one point I thought my heater wasn't working cause the compressor was so damn cold. Everything works perfectly 👍

[@jshddm2009]

i did the swap and having the same issue you did but i bought a wiring kit cant find factory harness so not sure what wires to swap

[@CheeHooGarage]

The wires I swapped are at the ecm.

[@dannyej89600]

So I did the swap everything works great, fans turn on with ect and A/C. Only thing is I wired everything like you said here in the video and my compressor is still not cycling which is weird. So C2-55 move it over to C2-17 then C2-17 to the black wire on the pressure switch right?

[@CheeHooGarage]

Yes. But cut the black wire from the switch so it is no longer grounded to the chassis and instead grounds through c2-17

[@dannyej89600]

@@CheeHooGarage​⁠​⁠yeah that’s what I did I depinned the black connector on the pressure switch then added another connector leading to the c2-17 wire so I didn’t have to cut anything. Then moved c2-55 to c2-17. Compressor never cycles off when A/C is pressed. It’s odd.

[@CheeHooGarage]

@@dannyej89600 switch good?

[@benblack9955]

@@dannyej89600 I had a similar issue. I got it to finally work after doing two things. I’m not sure which one actually was the issue. I replaced the used high pressure transducer sensor with another used one, and also selected to overwrite all instead of just the calibration.

[@jimmyramirez8844]

Any issues with driving on a hot day and ac going then truck stalls out?

[@CheeHooGarage]

No. Thankfully

[@edy1434]

i just order the BP automotive harness ac kit to do it the proper way, i guess since i have an 01 i will not have the same problem u had?

[@CheeHooGarage]

Hopefully not. But if you do... here's a solution 🤙

[@serafinnegrete5089]

Edy so how did you do it?

[@edy1434]

@@serafinnegrete5089 just like it is bought the BP harness with the ac sensor needed, change the bulb for the sensor, connect the harness to the pcm (in the BP kid comes a picture with the pins you have to remove and install, and of course I get my truck to a guy with hp tunners so he put the values of a 05 silverado in my 01 everything is the same but the fans, and that's it working like a dream totally OEM working perfect with ac

[@JoseLuisHernandez-yp5kw]

I have problems to find some to tune for electric fans is any way can i buy the program to do my self or some like that

[@CheeHooGarage]

Yes. Buy HP tuners and do it

[@JoseLuisHernandez-yp5kw]

@@CheeHooGarage bc dont matter what i have tu tune my gmc 01 or is any way can i make it work whit aout tune tanks.. sorry im learning this type of stuff

[@gerardolopez5875]

New on channel,, looking for info! Converting my 2000 to electric fans, and 3 pin transducer!! Did it worked??

[@CheeHooGarage]

@@gerardolopez5875 it works. This was my follow up because the compressor wasn't cycling off

[@gerardolopez5875]

@@CheeHooGarage@ how can i found this schematic?? The updated series wires

[@CheeHooGarage]

@@gerardolopez5875 I just googled it. But try clicking on the link to the forum first so you can understand what is happening. A lot of people message me because they ground the wire instead of looping it in series

[@gerardolopez5875]

@@CheeHooGarage @ ok wire that waz on 17 goes to ground on the sensor! Then 55 wire goes on 17 position!! And 55 output stays empty??

[@CheeHooGarage]

@@gerardolopez5875 yes. 55 stays empty. Cut black wire on sensor and connect 17 to sensor

[@jimmyramirez8844]

I seen in the form for fan type it’s set to serial?

[@CheeHooGarage]

99-00 have no serial bus.

[@jimmyramirez8844]

Perfect I have a 01 inch will set it to serial bus and use your settings. The issue with my system is getting cold then build high pressure and gets hot again. I did the upgrade switch just need new settings.

[@chrisnicholson72]

I have an 02 and I bought the Nelson performance and it tells you to tap into the clutch wire and it’s annoying

[@CheeHooGarage]

That's how I felt too. Don't get me wrong, it works, but I wanted it to be a little better. Thanks for watching

[@JeremyWilson-vu2pw]

On my 01 Silverado z71 I done the swap, with radiator fans, harness, fuses and all out of a 07 truck, took it and had them turned on and it done great for a year, then my AC comp started roaring, I done without ac for a year, then took it to an AC shop and had the compressor and system completely drained, changed, swapped, $600 worth of parts later and $200 labor, they can’t get the fans to come on and keep the pressure down on AC system, it built to 450psi, high is 300psi, he called n told me that’s what burnt up the first compressor and will burn out the new one too if ran like that. So now I’m on here trying to find and figure out a solution, I saw another posted video where a guy had the same problem I have with his and he simply jumped pin 86 on the fan relay to pin 86 on the A/C comp, so that when the a/c comp kicked on so did the fans automatically, now if that still allows the freeze up problem, wasn’t mentioned. I’m going to try that method as it seems the easiest to start with, and I don’t have the software or tuner that you have.

[@CheeHooGarage]

Need some kind of scan tool that can activate the fans. First see if they work. Then see if the pressure stays normal while the fans are running

[@dantec8854]

I have 2002 tahoe,the low speed work fine but the high speed won't kick in. What pin should I use the high speed any advice here Thank you

[@CheeHooGarage]

It's in this video kzbin.info/www/bejne/l2PaqId5h86Kf7M

[@zach38z]

I don't this swapped c2-55 to c2-17 then spliced a wire to it and ran it to black wire on switch and spliced it and my compressor wouldn't come on at all did you do this with the bp automotive a/c update kit or did you do it and plug your factory high pressor switch back up?

[@CheeHooGarage]

@@zach38z what do you mean by spliced it? And yes bp kit is installed

[@zach38z]

@CheeHooGarage I think I just seen the problem reading through other comments I spliced to that wire instead of just to the switch itself so it was prolly grounded out I'll fix that and see how it does lol

[@zach38z]

Well I fixed that and now no compressor or fans on with the switch same as before still and I have straight from that switch to c2-17 and moved c2-55 to c2-17s spot

[@CheeHooGarage]

@@zach38z set to analog?

[@zach38z]

@@CheeHooGarage yes sir I went by exactly what they had in the instructions

[@douglasgarcia2731]

Hey I just did the this exact same process only thing is I made my own harness same as the bp just made by me everything the same with the high pressure switch & 3pin connector and I also wired up the c17 to the black wire on switch, I was wondering is the compressor going to cycle on n off at a repetitive pace or when it reaches a certain pressure or temp? Because mine cycles on my off every like 15 minutes is that normal or what are your thought thanks in advance!!!

[@douglasgarcia2731]

It’s a 99 GMC Sierra 5.3

[@CheeHooGarage]

15 minutes seems ok, but it really depends on pressure, idle, temp, etc.

[@douglasgarcia2731]

@@CheeHooGarage when it’ did it the first time it took like 5 min actually to do it again and then little longer after that but I did flush my ac system or put the guages on I just through some I’m there to see if it’ll work honestly but I’m goin to do it properly and with the guages and go from there thanks once again.

[@CheeHooGarage]

@@douglasgarcia2731 if your ac is cold, you're golden bro.

[@douglasgarcia2731]

@@CheeHooGarage yeah it’s really cold I meant to say I didn’t flush the system and recharge it the proper way I just put some from orelly with the little guage they come with and went from there. But I was wondering it cycling only twice something was wrong.

[@fknwayne_]

Sup bro, the settings you have on your HP tuners does it matter if my truck is cammed or not? 🤙🏽

[@CheeHooGarage]

Shouldn't matter. 🤙

[@fknwayne_]

Right on, did everything you did in this video. Came out good, but the lines to be sweating is normal? As long as it doesn't freeze up?

[@CheeHooGarage]

@@fknwayne_ yup 🤙🤙🤙

[@fknwayne_]

Rajah that! Thanks for all the help and keep up with the videos bro 🤙🏽🤙🏽

[@ricks5468]

I have a question. When you did the BP swap did you leave the old switch plugged into the old harness and just leave it to the side somewhere? I’m trying to solve why my AC won’t come on now after doing what you did on my 02 Silverado.

[@CheeHooGarage]

No. I launched the old switch and covered the connector with the cap that came in the kit

[@ricks5468]

Gotcha, I did the same. I can’t seem to figure out why now my compressor won’t engage at all now after moving the c2-55 to c2-17 and hooking c17 to the black wire on the switch like you did.

[@CheeHooGarage]

@@ricks5468 it's because you're probably grounding out c17

[@ricks5468]

Hmmm I’m confused. Yes, it is grounded. The black wire is a ground correct?

[@CheeHooGarage]

@@ricks5468 c17 should be connected to the black wire coming out the switch AFTER you cut the black wire. If it's still connected to ground, you're bypassing the switch.

[@carlosgutierrez2383]

i did the efan swap, AC never worked to begin with when i evaced , vacuumed, checked for leaks and filled the system etc etc and THEN installed the bp automotive kit / tune to analog thinking this would fix my issue . troubleshooted, wiring is fine. found out i can only request ac sig manually with VCM scanner and ac works really good. any idea what it could be? im gonna do this method and hopefully this fixes my problem

[@CheeHooGarage]

@@carlosgutierrez2383 a/c control?

[@carlosgutierrez2383]

@@CheeHooGarage im gonna revert back to stock settings ( AC recirc sensor and low pressure - clutch fan ) and see if that fixes my issue. if it doesn't, then its definitely a wiring issue inside the cab that i have to check out. if its running fine like normal then im going to try this method and see if i can get it to work with efans

[@chinogodinez]

​@@carlosgutierrez2383I curious to know if you found a fix. My 02 silverado does not work unless it's at operating temperature

[@carlosgutierrez2383]

@@chinogodinezthe problem ended up being the sensor at the back of the compressor. When you get a new compressor, i believe your supposed to install the new high pressure cutoff switch ( Not the recirculating sensor in the front ) before installing the compressor to the engine. But since i already had it mounted and filled up i did not want to evacuate anymore, so what i simply did was cut the wire harness connector to the switch and connected those cut wires with a butt connector. Now the AC works without me having to manually switch the compressor clutch with vcm scanner. Hope this helps out !!

[@marcotena4158]

really great video man. really inspired to tackle this myself to do my 02 yukon denali. lucky for me theres a local junkyard that has 07-13 yukons so i can get the fans and also has some 03-06 escalades,tahoes and yukons so i can get the relay harness. lol. what type of laptop did ya use or can i use a tablet for hp tunners and what hp tunner did ya buy?

[@CheeHooGarage]

@@marcotena4158 the hp tuner i bought from Amazon years ago so it's the older version. I run it on one of those cheap hp laptops. Not sure if you can use a tablet

[@marcotena4158]

@@CheeHooGarageok. thanks very much for the reply. just wondering if it will be the same process for my 02 yukon denali when it comes to doin the conversion.

[@gerardolopez5875]

Why its the cycle switch by passed???

[@himeburger]

Thank you very much for this info and the link. Going through this on a 99 sierra. Did the Nelson performance relay kit and tune but fans are turning on as soon as truck is on. Will look into the bp upgarade kit but need to figure out why the fans are on when truck is cold and ac off. Liked and subscribed 👍

[@CheeHooGarage]

Is it set to analog?

[@himeburger]

@@CheeHooGarage The shop flashed the ECM for me. I would have ask for a printout of the settings. Had to mail out the ecm.

[@CheeHooGarage]

@@himeburger this would be the first step to your issue. If the blue and green wires go to the pcm, then that's what controls them to be grounded.

[@gerardolopez5875]

@@CheeHooGarage@ i have seen a couple trucks here in south tx area!! Fans running like u mention! Turbo hi😂,, I want ti convert mine the correct way!!

[@JoshuaDavis-j2f]

I did the efan conversion on 2000 Silverado 4.3 to 6.0 swap. Using the bp automotive upgrade. Removed red 33 auto recirculate pin from pcm and put blue wire from fan harness there. Switched it to #2 fan and analog. Charged my ac today and my compressor will not engage unless I jump the relay at under hood fuse box. Have tried jumping low side switch. Any idea what’s wrong? Also my harness is from a 2001 Tahoe and it doesn’t have a pigtail for the cutout switch on the back of the compressor. Pcm came from a 2002 silverado 2500hd and I don’t know if it had the cutout switch on back of compressor. Could my pcm be not grounding the 12v request because of the absent cutout switch? Is there a way to bypass that in the pcm?

[@CheeHooGarage]

I don't know what cut out switch you are referring to

[@JoshuaDavis-j2f]

There is a switch in the back of the compressor. Some have it, some don’t. I think it’s a high pressure shut off switch incase head pressure gets too high. Can’t really find anything online as to which models have it and which ones don’t.

[@jimmyramirez8844]

Did you fix the compressor issues

[@macielandsons]

I have a 2001 chevy silverado and mine is freezing as well.

[@CheeHooGarage]

This should be the fix 👍

[@RichlesAK]

Try changing your system from analog to serial cycling. And see if the system works like you originally installed it with the trinary ac switch

[@CheeHooGarage]

I did. Fans work. But compressor stays on. Something about the OS and 99-00 do not have a bus to communicate over serial data. This was the the last means before changing operating systems

[@aden6128]

FIX IT ! But when i hook up low pressure switch it gets hot so left it unpluged

[@CheeHooGarage]

@@aden6128 🤷‍♂️

[@johnnyramirez8944]

Hello, I have a question

[@macielandsons]

Do you have to buy credits every time you make changes?

[@CheeHooGarage]

No only the first time

[@macielandsons]

Can you post the model of your hp tuners

[@CheeHooGarage]

@@macielandsons I got the old one mpvi2

[@macielandsons]

Thank you 👍

[@macielandsons]

Did you reconnect the wire on the switch that you cut into ? What color wire is it on the switch plug?

[@juanmendoza2262]

I am in Yuma Arizona so that shouldn’t be a big problem. But I took down the information just in case! Thank you Sir. You live in Hawaii ?

[@CheeHooGarage]

@@juanmendoza2262 yup 👍

[@Titian92]

Can you send me that diagram? I'm going to try this this weekend.

[@gerardbraithwaite9685]

The problem I'm having is the fans don't come on until the engine warms up so if I cut the ac on from a cold start it will blow warm air until the engine hits the first fan enable temp setting.

[@CheeHooGarage]

That's what the ac upgrade kit is for. Or you can set your temperature to come on earlier

[@gerardbraithwaite9685]

@CheeHooGarage I just bumped it down to 10 degrees so it will always be on, on low speed. AC is blowing cold. I was confused watching your video, I watched it like 8 times and I'm not understanding, did you change your pressure switch? Or is it the original with just a wire added? I understand the pcm pin change you did, but after looking at the website with the kit it looked like a 3 wire pressure switch red black and gray wire.

[@CheeHooGarage]

@@gerardbraithwaite9685 in the video before this one, I installed the ac upgrade kit from bp automotive. then my problem was the compressor not cycling.

[@CheeHooGarage]

it's a new sensor to replace old style switch

[@gerardbraithwaite9685]

​@CheeHooGarage Got it thank you!

[@spyderlyf3]

Cool to find this video..i have an 00 Tahoe and i had to upgrade my computer to an 0411 PCM..This switch should give you control of the ac fan with ac pressure..the fan shouldnt just come on because the ac is cycling. You should be looking at ac pressures not whether the ac is cycling or not. If you have constant fan on condition you need to upgrade your PCM..I will figure this out so thanks for pointing out it exist..

[@CheeHooGarage]

@@spyderlyf3 my fans operate off pressure and engine temp. I set the parameters with hptuners. The problem was the compressor not cycling off and freezing

[@spyderlyf3]

​@CheeHooGarage yeah cool to see you found the fix. I'm gonna definitely do this wiring upgrade. I don't want turbo fans anymore. Problem is mine is EFI live tuned..gotta start over with HP tuners.. Good stuff either way..

[@TheMonstervirus]

This made me subscribe to you bro. Thank you.

[@CheeHooGarage]

I appreciate the support 🤙

[@cartispercs4804]

So still purchase ac update kit?

[@CheeHooGarage]

I would.. if you want your fans to work with your ac

[@cartispercs4804]

@@CheeHooGarageand this for is 99-02?

[@CheeHooGarage]

@@cartispercs4804 correct

[@shaneburkhart9353]

You hook that 17 wire to the black wire on the low pressure switch

[@CheeHooGarage]

@@shaneburkhart9353 correct. So instead of the switch going to ground it will go to the green 17 wire

[@tom-er6yb]

hey pal ?? come over and install the fans program on my 2000 Silverado ?? I'll make it your worth while !!

[@IDABAYAREA650I]

Ayyye hell yeah brotha 🤙🏽

[@CheeHooGarage]

Thanks for the support 🤙🤙🤙

[@davidanddiana7173]

Cool video man 👍

[@CheeHooGarage]

Thank you 🙏

[@DC-jl4ns]

Thanks!!!

[@jshddm2009]

i have a 2002 silverado