Why and How to Disable GM's Active Fuel Management (AFM)!

[@BarneeFife]

I have the feeling that GM decision makers can tell you where the best golf courses are, where to go for a 3 hour lunch, which people you need to cozy up to to keep your job, how to be a yes man or woman, but they don’t seem to know and/or care much about their product. Thankfully there are guys like this within a computers reach. Thank you.

[@SpynCycle57]

I watch these AFM videos occasionally to reassure myself that sticking with my 2004 Avalanche is the right decision.

[@recyclespinning9839]

Yup, I purposely bought a 2005 GMC Sierra 4x4, Texas truck , low miles . Mines made in Canada, great truck@!

[@DeeRuss]

Yes the Vortec engine before 2006 was built by masterminds! Well maintained will last over 300,000 miles way better engineered than anything after I would stick with the Avalanche till the wheels fall of

[@Murphturf408]

Just had my 06 totaled by someone. Great truck, not an issue! Now I’m like duck this market

[@dylanbrown3664]

What’s crazy is the motors up to 2010 are just as reliable as its predecessors once you delete the AFM

[@nickwebb9937]

@@dylanbrown3664they all would be reliable even up to now if they didn’t have cylinder deactivation.

[@rikkidietz8588]

Installed the Range Technology Disabler on my 2018 Silverado with the 5.3. Works great. No more bucking when going from 4-8 cylinders, more power. Lost 2 mpg on the highway. Highly recommend.

[@TC-hs5wy]

So these engine get 2 Less mpg? Instead Of 16-18 mpg city they get 2 less? Kinda like what i get on my ‘05 yukon 5.3 non afm(DOD) engine. Its a pig. The newer sierras and yukon are appealing to me (2014-2019) but worry about reliability and the DI engine carboning up.

[@DLTJR1959]

@@TC-hs5wy I used a Range disabler on my 2018 LTZ and noticed about a 1 to 2 mpg drop in around town driving. Traded it in on a 2022 HC that has the AFM deleted from the factory. Chip shortage issues.

[@slalomking]

@@DLTJR1959 from what I understand, even turned off the AFM lifters in your engine can still fail. It’s just a matter of time.

[@vkchikom3187]

@@slalomking so just get the AFM kit delete?

[@slalomking]

@@vkchikom3187 well that involves thousands of dollars, you have to replace the cam, the heads have to come off. Why would I pay for a new truck, then have to spend 4k to fix a GM boondoggle? Just buy a different brand of vehicle

[@turbosupra2jzdragracingtob249]

It’s a scam and GM should be sued.

[@syloui]

Epa now requires it on factory installed v8s. Even the Ford Coyote had to equip it

[@Motor-City-Mike]

Nice simple explanation and tempered to "soften" just how much trouble the system can create - simply put, several issues can trash an engine. Unfortunately the system and its unique parts are more complicated than needed to be explained and require diligent attention to maintenance to reduce the possibility of a failure. Anyone researching just exactly how the entire system functions will find out just how mechanically "busy" the extra functions required are, and see all the areas for potential failure. So far, mine ('07 5.3 Silverado) has functioned well, but is annoying. On flat level roads there's no sign when it is engaged except that because I have modified exhaust - the truck Sounds like it's missing. The annoying part is when the road is at all hilly and it's below expressway speeds. The system "hunts" turning on and off frequently, and the truck feels lazy going up a longer hill until the system Stays off. Best to disable it and avoid possibly destroying an engine.

[@floydmayes4924]

I just bought a 2022 Silverado and am not willing to void my warranty by putting new cam lifters and whatever else is involved!

[@MikeSmith-nu9wt]

My 07 1/2 ton 4wd silverado dont have it , its the newer version ( 07 was a mid year split ) 327,000 miles all original motor , tranny , axles and transfer , its about to hand grenade though , everyyhing is going bad at once now though ..

[@michaelconnor5265]

​@floydmayes4924 I'm sure this is for people outside of warranty

[@rogernorgren6173]

Awesome job explaining this!!! You should be in charge at GM because they don’t seem to know how this works themselves. ( failure of lifters on my 2021 Sierra with only 8.800 miles and they replace with same parts so just a matter of time I guess). Anyways thanks again for the great explanation.

[@ronaldrussell5481]

GM dealers aren't going to do anything not authorized by GM.

[@jimmysapien9961]

@@ronaldrussell5481tru

[@fishandgameman]

If you place the automatic transmission gear selector in the manual position and select the highest gear of 5 of a six speed, it will not go into AFM mode. Great for around town or hilly terrain. Kind of APITA to remember to do it each time but it works. Get on the open highway and let it go into AFM and save a little fuel.

[@jeremylakenes6859]

Does towing mode do the same?

[@m6780]

@@jeremylakenes6859 not sure about all years and models, but in my 2011 tahoe the answer would be no. With the transmission is set to D and towing mode active, the motor still activates AFM.

[@jeremylakenes6859]

@@m6780 hust found out the same with mine. Still goes in that mode.

[@maddawg4599]

That’s what I do. Run it in M5 90% of the time.

[@freddiemoench2551]

I do this every time I drive. I just bought my 2010 Denali in November. Only has 100k miles, not a single leak, or squeeks from anywhere. Oil is very clean. Every option works. Love my hemi killer 6.2

[@truth959]

This guy knows more about GM's engines than GM themselves.

[@n5ifi]

Which means GM probably gave it to them. This deal is killing GM.

[@jimmace6148]

As soon as I started getting lifter "tic" I installed a disabler. Within a few months the lifter noise became quieter and intermittent until it totally disappeared and has never came back after over 65k miles. I got lucky lol. But oddly I gained .6 mpg instead of losing mileage lol. Hardly noticable. But downshifts were definitely improved. But the 6L80E is still probably my least favorite transmission ever lol

[@Ratkill9000]

Delete the T-stat on the transmission and it'll be much more reliable.

[@IvanRamirez-fs3sf]

Where did you get the disabled from? How much it cost you ? Thanks

[@derekweese2230]

@@Ratkill9000 tell me more please!!

[@stevecampbell7620]

I would agree with you on the 6L80. Definitely get a trans cool thermostat by pass and I personally changed out the Trans fluid. I flushed out the DexIV and replaced it with Synthetic LV (low viscosity) fluid. There is a GM bulletin to do this to the 8 speed for shudder and it really helps the 6L80 also.

[@NBC_NCO]

That's funny you say you got better gas mileage I swapped out my 5.3 to a 6.2 no mods other than just turning the computer for added fuel and I actually gained three miles per gallon on average. Makes me wonder why GM just didn't stick the 6.0 and 6.2 L in as Factory.

[@TheCowby]

I have a 2018 Z71 Silverado 1500 with the 5.3 and only 33,987 miles on it. I bought it brand new. My engine was ticking the other day. Took it to the dealership. Needs a new cam and lifters.... All covered under warranty FORTUNATELY, but I definitely ordered the disabler tonight and before I drive it off the dealership lot when it's fixed, I'll be plugging the disabler in. AFM is not worth the trouble. I didn't buy a truck to get good gas mileage...

[@Potatorq]

Any updates?

[@ynoT_63]

I purchased a new 2019 Silverado 1500 LD with a 5.3L, L83 engine. I've seen a couple of videos that talk about disabling the AFM by putting the gear selector in "L" (manual) and setting it to "5" so it won't go into overdrive and activate the AFM. This works but you have to manually select "5" each time after you put the selector in "Park". I drove it this way for a while and didn't notice any issues. I ended up purchasing a used Range Technology AFM/DFM disabler dongle and have been using it since 6/23. I've driven close to 20K miles with it and have had no issues. My truck used to get 17/22 mpg without the disabler and now I get 16/21mpg with it.

[@barrypowell829]

Personally I tried the manual mode at 5 gear. Yes all 8 cylinders are active. However rpm’s are up in 5 gear at hwy speeds. Short trips at freeway speeds are okay in 5 gear. But hundreds of miles in 5 gear? That’s where the AFM range disabler has the advantage. JMO

[@keithbellair9508]

Hands down best video on this issue

[@SummitRacing]

Thank you for watching, Keith!

[@GKASEY1424]

Read your owners manual. There is no reason to install AFM delete. As instructed in the Owners Manual shift into M. Whatever gear you are in it will be displayed. Then tap up to the gear you want I usually go to 5 or 4. The xmsn is not strained because it is electronically controlled. Now as stated in the Owners Manual when 5 or lower is selected your engine CANNOT go into V4 mode i.e. the AFM is not available! Another plus is when going 70 on flat highway still have AFM available for 20 mpg. No need for AFM delete bandaids.

[@undeadmonkey9122]

My new Chevy Silverado, 6.2L has this. Trying to gain and much knowledge as possible. Thank you for the info.

[@slycarlo8747]

This video is extremely long winded though for such a simple answer, if you don’t want to do major engine work, just buy an HPtuners mpvi2, you can even download the VCM suite for free and it comes with a few sample tunes to look through the program. Disabling the DOD on most Silverado’s is literally just a drop down option that says enable or disable, once the vehicle is flashed you can remove the mpvi2 and it will NEVER run in v4 until you flash it back. You can even keep the warranty on the vehicle if you just change it back before you get to the shop lol pretty much impossible to tell if it has been flashed or not.

[@undeadmonkey9122]

@@slycarlo8747 thanks for the info. Right now I’m not looking to change anything on it. Trying to absorb info. Big change from my old I-5 Colorado to this V8 beast.

[@slycarlo8747]

@@undeadmonkey9122 Right on, I came from a 5.3 Sierra so I know the feeling haha, way more torque in a 6.2. The first thing I see a lot of guys do with their 6.2 is install a boxed cold air intake, AFE is expensive but their pro5r filter is a monster. Next buy NGK iridium plugs and MSD wires. I would also change from the stock rancho shocks as soon as possible, Bilstein makes a great replacement. Then comes the most important part, a loud pipe out the back lmao Texas Speed 3 1/2” w/ cutout was easily the loudest pipe I could find for this truck. I snapped and bent a pushrod the other day and thought I was going to have to pull the head, threw another pushrod in just to see what it would do and it’s like nothing ever happened lol, time will tell what will happen to the chunk of pushrod still left in the engine, chances are it’s rattling in the pan out of harms way.

[@SummitRacing]

Thank you for watching!

[@SummitRacing]

Thank you for watching!

[@theconfused_fisherman]

Sounds like the Range Tech plugin is the way to go for my daily driver Silverado

[@texasfan8892]

Great video and very informative. This explains why some people still have lifter failure even after they've installed a disabler because it seems that the lifter or other components pertinent to the AFM/DFM system were already failing at that point. So in short, it might seem that the best solution is to purchase the disabler and install it almost immediately after you purchase the vehicle. This way, you are actually taking preventative action and not just putting a band-aid on an already bad part.

[@SummitRacing]

Thank you for listening and for your feedback!

[@73emce]

I buying a 2021 next weekend. Its still at the factory and is scheduled to be delivered between Oct 23 - 25...I'm assuming this will be early enough in the life of the engine that lifter damage will not have occurred?...hopefully.

[@greybone777]

The full deal replaces the spring lifters and oil pump parts.

[@chadvalliere8697]

@@73emce no

[@andrewgill1645]

I just bought a 2018 Sierra with 40K on it. Here’s to hoping the disabler route saves me an engine rebuild.

[@divineoracle4809]

I was wondering if this was possible, I was in the market for a Chevy but when I heard about this issue I was sure to steer clear. What a STUPID DESIGN on their part. They are knowingly selling people a technology that destroys the car after warranty periods are up. Corporate greed, ohh well. I'll vote with my dollars. Thank you for supplying this fix for the people who already own one!

[@maddawg4599]

I have an 2015 Sierra with the 5.3, the free way to deactivate the AFM is to put the shifter in M5 and it locks out the AFM. I don’t do any extended highway driving anyway so 5 gears and a true V8 is plenty for me.

[@ChrisEsposito]

did that today ,, u just bought a 14 Silverado 1500 z71 off road truck with 100,115 miles on it.. truck drives great i hate the v4 crap already. drove it in m5 today with no issues..

[@donaldhollingsworth3875]

You should never use a plug in OB2 dongle. It will result in check engine lights & other codes, plus it can back feed into the main computer & shorting it out. The best way to disable the AFM or DOD is to use an inline Disabler such as the Range Technologies Pulsar kits.

[@keithbellair9508]

I need to check that out… it says the puslat doesn’t work on my model. Looks like it plugs into the ecu.. hopefully range doesnt sale a product that will do what you say

[@TheRealBiggerAl]

I have a Range version since 2019 and 50,000 miles and none of this e problems.

[@barrypowell829]

I’ve used the range disabler for a few years. None of what you mentioned has happened to me.

[@waynebeasley8700]

I'm one of many who had the expensive experience of an AFM lifter failure on a low mileage engine. ( just out of warranty) The internal damage was extensive, and expensive. I didn't know about the delete kit until the rebuild was nearly complete……however I did buy an AFM disabler for my 6.2. My fuel mileage is exactly the same as before in mixed, city, and highway driving!

[@kalani1987]

I have heard that it's best to unplug the disabler when the engine is off to prevent battery drain. Have you experienced this?

[@FURDOG1961]

0:00 AFM. How to identify and disable. 1:50 Identifying AFM from non AFM engines. 2:20 Gen 4 and early Gen 5 engines. 2:54 2010 version improvements. 3:45 To disable.

[@oSTYNCLSYo]

Can a AFM disabler create any problems with the fuel injectors?

[@computerfixer06]

I had a range disabler in my 09 silverado, starting at 60k miles when I bought it. at 90k I lost #6 intake lifter. After having the lifers, etc replaced twice I ended up replacing it with an AFM deleted Jasper engine. Truck ran great after that but cost me a lot of money.

[@noe_9568]

How much

[@de868]

I did the same thing with my 09 Silverado I bought with 60,000 miles . It worked great for me. no oil consumption and never had a check engine light come on 211,000 miles now.

[@stevehenderson2571]

I installed a disabler about a month ago on my 08 Sierra with 129,000. Used 1/2 qt between oil chg’s every 3k. Originally thought it was transmission going out on deceleration with shudder when it reached 2nd gear. Mechanic told me AFTER I had other shop chg fluid & install Dura Lube in trans. Drove it a week when other shop said get a disabler. Ordered it from Amazon. Shudder stopped immediately. Simple fix & very thankful.

[@mikef-gi2dg]

Now this info answers a lot of questions about gen 4 and 5 reliability and AFM DOD. I have the RANGE Dis-abler on my 2015 5.3 Silverado. I leave it plugged all the time. I'll take the hit on MPG, I didn't like the shudder I got when cruising at 30-45 mpg, converter locked up, in over drive, on 4cyl mode. The switching in and out of these systems, made me say, Oh Hell No. Disabled in v8 mode is smooth as expected. This system shifts thru all six speeds pretty quickly even in steady cruise, and the shutter wasn't going to cut it. Pulling a trailer with car, at 60 mph+ with AFM ENABLED, is no problem, and I get 20 mpg+. But I just leave it disabled.

[@JXC98]

How she running 2 years later?

[@mikef-gi2dg]

@@JXC98 Very well no complaints at all.

[@kirkhammetthellyeah]

Is it possible to reflash to ecm to permanently disable AFM? It would be nice to not have the module plugged into the OBD port at all times and have to depend on it.

[@3bd0o0l]

One important question, what if I use the AFM disappear for a few years (say 5 years) and I took it off for a while later, would there be problems? I’ve heard that lifters will collapse very soon due to carbon that been already built up at those years and the lifter will not retract

[@BlazeSEGA]

I like the look of the 2014-2018 silverados, but i think i'll be keeping my 2002 Chevy 2500HD.

[@johnbehneman1546]

Great video and education. Thanks for sharing. I learned so much.

[@peteJoseph-x3h]

Just tap the the towers with a 3/8-16” tap and install set screws with thread sealant. Then use whatever valley cover you want. You’re welcome.

[@robertemmons2260]

This is exactly what I had did back in August of this year. No more worring if the seals on the valley plate are failing or not.

[@MonzaRacer]

And Scoggins-Dickey has press in plugs that require no tap, haven't seen any come out yet.

[@tntrailrider7379]

Great video! thanks for breaking this down and showing all options and when to used them for my truck.

[@SummitRacing]

Thank you for watching!

[@jimmysapien9961]

@@SummitRacingyes thank you . What is the part # for the Plug & play

[@dme2453]

If I delete and keep the original valley cover (for check engine light), does anything need covered or plugged up so oil doesn’t flow through the afm system downstream from the solenoid?

[@TheMrgoodtool]

I have an 07' monte carlo ss with the 5.3 v8; and afm system. All I do is keep the automatic transmission in 3rd. gear around town and that keeps all 8 cylinders active. Regular yearly engine oil changes with a high quality synthetic oil, are a must as well. Can anyone tell me if I'm on the right track??

[@kurtzimmerman1637]

AFM stands for automatic failure mode.

[@greggclaussen]

lol

[@recyclespinning9839]

Hahaha, good one

[@andrewgill1645]

With regard to the high pressure oil pump spraying too much oil on cylinder walls, is the plug fix for this issue advised when just going the deactivation route?

[@stevepouliot6906]

Got a range technology dfm disabler in my 2020 AT4 with the 5.3 , its awesome also had it in my 2018 Denali with the 6.2 and worked perfectly in that as well

[@txwilson100]

Went on this site and it states when checking fitment, said the model linked doesn’t fit. Did you use the part linked in this video? Have a 21 LT Trailboss w the 5.3

[@alexcerrito9111]

Is it true if you go above 80 with the range it will go back to switching to V4 mode ?

[@dustinwhipple5203]

If you use the afm disabler do you need to plug the prv and change to a low volume oil pump? Or is that just if you do the actual delete kit?

[@captfrostii3675]

@@alexcerrito9111 I have a Range disabler in my 22’ Camaro. Gotten above 80 many times, and never has it switched back to v4 mode with the device plugged in since before I installed the product. Hands down the best investment I’m making for getting 15 mpg now.

[@captfrostii3675]

@@dustinwhipple5203 No, the stock system in the car will run just fine. The disabler just shuts down the AFM from letting the car switch back and forth. It won’t do any damage with the systems Installed set up for the AFM

[@jeffauvil8129]

My 2021 has the range technology since new and also highly recommend changing the transmission thermostat with a new superior transmission bypass valve 2021 trail boss 5-3 Both the engine and trans Humming

[@hardhittrr]

This makes me happy that my 09' Silverado, with a 4.3L Vortec doesn't have this. Thank goodness.

[@hardhittrr]

@Jack Russelle Lewis it's not good on passing people on the road, ur right. But this motor still has a decent amount of torque. It moves loaded trailers & boats pretty good. 🤷‍♂️

[@jimmyswollnuts7662]

@Jack Russelle Lewis beat me to it 😅

[@jimmyswollnuts7662]

@Jack Russelle Lewis beat me to it AGAIN! 🤣

[@sea_bass21]

The 4.3l is the best motor in my opinion

[@theoverlook5976]

It cooks!

[@rayss3323]

Anybody with AFM or DFM engines should keep an eye out for a class action lawsuit. GM also has a TSB on repairing these engines.

[@kkoch666]

The class action will go nowhere..

[@1982MCI]

@@kkoch666 class actions only get attorneys richer

[@turnne]

@@1982MCI And cost the companies money

[@1982MCI]

@@turnne good point, which any time it cost a company money, it’s treated as a “pass thru” cost meaning it gets passed on to consumers thru higher costs or other means

[@turnne]

@@1982MCI Its very common for just about large corporation to have some lawsuits on the table. The company I used to work for has paid settlements in the millions of dollars for former members of the US military for a product that meet the specs it was supposed to However...they cant raise their price, neither can GM Those settlements are taken out of profitability The market wont bear a price increase...really why would buyers n ot just go and buy another brand?

[@donwithyashit1473]

So I got Ahold of a truck and thought it would be an easy cam and lifters. Nope debris took out a couple of rod bearings as well as the crank. Any ways it won’t have afm when it goes back in. What should it cost to reprogram the ECM? Ball park that is. And any help finding a good place to have it done would also be great. I live near Cheyenne Wyoming.

[@recyclespinning9839]

I had to turn in my leased 2017 Ram 1500. The dealer would not fix the cam phaser , check engine, dangerous limp mode issue. Was under warrenty , but the lease date was up. I returned it , luckily was leased . I bought a pre AFM GMC Sierra 4x4, made in Canada, was a Texas truck , low miles. Great truck. I think these older trucks will go up in value. I'm starting to see it already. I average 15 to 16mpg. Loaded with tools and ladder rack for work the four doors , I use the back for my portable tool boxes and very versatile . I can just put the tool boxes in the back bed and then I can carry 5 people. Comfortable on high way and town 😌

[@patricks488]

They already are. I'm 23 and saw this coming a long time ago. Pre 2008/pre 2006 trucks are about to sky rocket in value. Your problem is you bought a chevy instead of a older toyota. Your chevy is fine but isn't shit in a 1st gen tundra. Heck cant compare to second gen tundras either. You are not well prepared to take your chevy into 2030-2040 because your old chevy won't last that long. My old Toyota v8 will.

[@Peter-do5ht]

I live in mass and own and drive several rust free vehicles from out west and down south . I also have many rusty new England parts cars and trucks in my collection . I got tired of repairing rotted garbage and changing brake lines .

[@rickyking3333]

Guys an some girls don’t worry AFM is easy to work on an fix. It’s not as bad as it seems. You just need a few parts. Like a BTR stage 2 cam ls7 lifters an VVT delete an a few gaskets an head bolts. A dyno tune an you will never have a problem out of your AFM. SS headers an duel exhaust is optional. Best upgrades I made to mine

[@ricefarmer1point6]

I second this.

[@bigbeast103]

It's just common sense

[@tomdent583]

How do I know if I can just Disable my AFM ? I do have some Ticking that sounds like it is Valve related, does that mean that I should take the Heads off and replace LIFTERS etc???? 07 GMC K1500 129,000 mi 5.3

[@PickupsAreNotTrucks]

I got 160k hard miles on my 08 without issue. Make sure you run the proper oil in the engine or they will burn oil like crazy. Ask me how I know. That being said, when the engine inevitably takes a dump, I’ll yank it out and do a cheap rebuild and kill all the AFM components. This pickup is always towing or pushing a plow, that 4 cylinder nonsense isn’t saving me any fuel. They’re good engines though. We have several in the family. Intake gaskets and oil pressure sensors are the main repairs on them. No big deal. Do them both at the same time and don’t worry about it for years to come. Always used FelPro gaskets with great luck.

[@BarneeFife]

I have a 2010 Silverado 5.3….it has burned oil like crazy since day 1, brand new. Like 2 quarts or more every 3k. I just put the new valve cover (driver side only) because, apparently there was a design flaw in the drainage, and lots of oil went through the PCV. As somebody mentioned, my number 1 plug was very gunked up, and number 7 was pretty bad. Oil consumption has slowed, but its still too much, Any ideas? Do you know about that diverter he mentioned at 3:00?

[@gordonramsey8866]

Ok I have a 2017 gmc sierra with a 5.3 with roughly 70000 km .....I haven't had a issue but iam worried about the lifter issue... should I buy one of the electronic modules to disable the afm . And will this certainly stop a lifter issue

[@megaleadjp]

I have a 5.3 and installed disabler at 90,000 because of oil consumption. Now I'm at 109,000 and am hearing lifter tic and hoping it holds out till I get a new van.

[@jimmysapien9961]

@@megaleadjpomg it didn’t help 🤔

[@johnnytsunami6185]

My 07 has 250 thousand miles and never been an issue for me but I also don’t try to go 10,000 miles between oil changes

[@noe_9568]

You never disabled the AFM?

[@johnnytsunami6185]

@@noe_9568 no. just change oil every 3,000 miles with full synthetic castrol edge

[@AlaninUSA66]

That's fantastic. Putting melling oil pump in my 08 tomorrow with 215000 miles.

[@johnnytsunami6185]

@@AlaninUSA66 hell yea your gonna be good for another 200,000 now

[@blkblky]

Whats the average cost for a complete DOD AFM delete job on a 2014 5.3.? I got a quote from a local performance shop and told me its about 7k-8k job with all parts and labor. I know my way around an engine but find this to be ridiculously high... I have asked some local shops and they state they have complete 6.2 for about 3-4k... whats the best route?? Should i buy a used engine or rebuild...Am seriously thinking of just cutting my loss and getting a Toyota Tacoma...

[@timmarkham522]

Wow, that’s a serious knee jerk reaction to a very common problem…. If you’re not stoked on AFM, you should definitely buy a chronically underpowered Toyota so it’s gutless all the time guaranteed. I guess that’s one way to go about it….

[@blkblky]

@@timmarkham522 am not ok with paying 55k and get mediocre quality and call a completer engine tear down a "common" issue. It's not like you're replacing a fuel pump/alternator/battery. I prefer "under-power" rather than no power and call engine rebuild a common issue

[@alvarezz09]

can you guys make a range kit for the 2021 10 speed 5.3 motors. The range kit was awesome because its super simple to use!

[@godzilla7148]

What would happen if you just unplugged the electrical connector to the solenoids on the valley cover? I'm guessing it would throw a code, but it wouldn't allow the motor go into AMF or DFM either.

[@ThreeTreeDog]

actually i did the delete and my previous valley cover and solenoids are sitting on top plugged in. If i unplug it, it runs in V4 full time. trying to decide if I just want to buy the chip or pay the same price for someone to program, or just buy a programmer..charge $150 lol

[@edstevens2875]

Will this method apply to the GM 2.7 L 4 cylinder engine in the Sivlerrado's I wonder?

[@jamesphillips1872]

Local GMC dealer has six trucks down ordering 6 engines biggest screwup GM ever did you would think that garbage with the old Cadillacs that taught them a lesson.

[@buckhorncortez]

Auto manufacturers have to meet CAFE standards imposed by the federal government. This is part of GM's strategy to meet CAFE. Complain to congress, they're the only ones that can do something about it.

[@brucewiemer8341]

Does a 2022 Camaro 2ss have AFM ? If it does how do I get the car to run on 8 cylinders all the time? This is the 6.2L engine of course. Lmk

[@tktheraven2733]

I’m all about being able to switch into 4 cylinders but honestly why can’t it be a switch on/off? I’m currently 300 dollars into a transmission filter, oil flush and wire harness change hoping it fixes my shuddering. I just stumbled onto this though and it makes a lot of sense. Idk if anyone else experienced the radiator fan tripping on and doesn’t go off? I’m thinking it’s the temp sensor from the fluid causing it but idk. Happens daily.

[@dotdot505]

My pop traded his 2015 Silverado after 4 years ownership for a new 2019 Tundra 5.7 back then and never look back. The Tundra live a hard life, now have 260k miles, I haven hear him complain or yell at me on why I'm not home from Chevy dealer yet. Let's keep it this way, I hate going to the dealer.

[@service1956]

Using the AFM disable device will only work if lifter damage has not yet begun. The other, and most important part is changing oil every 4000-4500 miles. These engines do not tolerate wear well if going to a longer oil change interval. Having done these two things will lessen the chances of lifter failure considerably.

[@lazurm]

SERVICE 1956: I'm not a mechanic and, so, my question. Does your suggestion to change the oil every 4000-4500 miles still apply if I'm using Mobil 1 synthetic oil? As a note also, I have no engine oil loss after 6,000 miles (so far).

[@service1956]

@@lazurm There are 2 problems that these engines have. First is that they do not tolerate dirty oil for an extended period of time. The oil itself will not break down a whole lot in 5000 miles but, the problem remains when hydrocarbons form inside the crankcase contaminating the oil. Also, short trips during cold weather will result in moisture to form inside the crankcase. This is bad, especially for these engines. Tuning out the AFM will keep it in full time 8 cyl mode. Therefore the VLOM solenoids will not activate, and the lifters will not activate. Doing these 2 things will greatly lessen the chance of having AFM related problems. Another problem I just thought about is that there is a filter screen under the oil pressure sending unit that gets clogged and can cause a problem. This is also brought on by going too long between oil changes.

[@lazurm]

@@service1956 I'm not sure if I even have the engine that has a AFM. I have. GMC Savanna 1500 from 2013, 8th vin is "4".

[@reyperez3424]

@@lazurm Depends if your engine oil capacity too 6 quarts 4500 is the best 8-9 quarts up to 8-9000 miles using Mobil 1 filter

[@jimmysapien9961]

@@reyperez3424I use mobile 1 exclusively

[@cessnaflyer]

thankfully very few of the engines with the AFM application have reported any problems.

[@recyclespinning9839]

Where is your data on them not failing with AFM?

[@IAnonymous3]

I am about to get a stage 2 cam and must have this deleted and a mechanic I know Said you could get a chip to do this.. I was skeptical a liiiiiiittle bit but seeing this makes me feel confident that it’s fine (when your AFM system works fine at the moment). Thanks guys. I’ll be ordering that chip. Question: anyone please tell me what happens if the chip fails and there is a stage 2 cam installed…. Potential damage:risks.?

[@kbskbreezy]

There’s a $200 plug in that u stick in the tuner port to deactivate it

[@reyperez3424]

Only old pcm need a chip and I mean 90s pcm but anything that comes with a Ls family engine need a tune like hp tuners

[@ricefarmer1point6]

Just buy the stage 2 cam, you’ll be happier….I was

[@markrenton1093]

I just found your channel , very first rate thanks.

[@michaelmanley8046]

I have watched a few videos on this subject. I have a 2022 corvette! I am not inline with the government save the world?? How do i shut off AFM and be safe with my engine? 😁

[@0my]

Smash the top of the engine with sledge hammer

[@MaxTune]

If you’re in the Atlanta area. I disable the dod feature Monday thru Friday.

[@ylkutt4051]

You got Instagram?

[@c-mobucks4930]

Contact info

[@DeeRuss]

My 2008 honda accord has something similar to this its called VCM and its probably worse than GMs AFM system. It burns so much oil and causes audible noise from the engine good thing all I need is an aftermarket wire to hack the system

[@DustinKeating-yk3vq]

My 07 has the summet racing delete kit in the motor i bought it like that thank God

[@regentsuper3086]

GOD bless U bross. Especially polite and so calm intraducer and video explaining man. 👍👍👍💯🤝

[@anthonycrots2161]

Found a gently used and well maintained '13 silverado with AFM. Taking a chance on it in this market. That Range disabler seems to be the way to go for now at only 60k miles. Do y'all think I need to put a different oil pump in and block the PRV?

[@chadouellette790]

If people read the owners manual you would find putting the transmission in manual mode gear # 5 will disable afm.

[@fireboy5043]

Great vid didnt know about this oli need to get that Deleted on my 07 Chevy Tahoe so i can see what 8 cylinder real fills like 💪🏼💪🏼

[@flyonawall6521]

Would adding AT205 additive damage AFM engines?

[@juansegovia1108]

Please I really need help. I have a 2015 Chevy Silverado with the LS motor the 5.3 Everyone is telling me that it's my afm And some people said no, my truck is doing exactly this.... I will have an engine light. Come on, and it was saying cylinder 6 misfire. But everything is brand new a lot of times the light will not even come on in either way, it still has the same type of ..Vibration/misfire.. Could this just be? It's in early stages of these spring-loaded? Lyft's going bad, or is there no such thing As stages once they go bad, it runs rough all the time??? Please 🙏🏾 help me ty

[@toinfinitiandbeyond9209]

Great video. Do you know if 2022 Camaro v6 engine has Afm?

[@you-nh8xo]

Worry about getting a V8 first before you worry about that 😂

[@FURDOG1961]

Summit, can you order a new LS3 crate motor without the AFM?

[@cj8172]

I think so. I think it's only the L99 automatic ones that have AFM

[@id-331]

If I decide to use a plug in disabler, do I also have switch the oil pump and add the small plug? Or no?

[@mansour9196]

Many users they deactivated the Dod electronically only and they are telling its working well. But, keep in mind if you did that don’t do any online programming

[@theforestisdark9676]

So the device won't cause any damage to the engine or transmission?

[@holyspiritandkevin8441]

How do you know if your lifters have started to fail? I just bought the Range disabler device because I heard a small knocking sound in my engine when I first start it, but it goes away after a little bit. 2009 Silverado 5.3 V8, 132k miles. Thanks.

[@barrypowell829]

I read that ticking sound at start up could be just the drive belts. That what I read, and it goes away when you drive a bit.

[@holyspiritandkevin8441]

@@barrypowell829 Huh. Thanks. Considering getting a tune up for it. Still does it with the Range device.

[@sls1794]

Can you drop a pre afm engine in 2009? I have 2009 silverado but can get my hands on pre afm motor for good price. Mine is done

[@tommyphillips4669]

I have a freind that got 4 cylinder moter. The moter had to replace and is still having problems with there S U V are they on a recall yet ???

[@xXxFroztyy]

I used to have a 2011 Camaro ss . Didn’t have it for very long, you can probably guess why….Started knocking a lil bit and then followed with loss of oil pressure. Sucked, was a fun car, only problem I had with it was the constant shut down to 4 cylinders which I knew was gonna end up killing it. Feel bad for the sucker that paid 13k for it auction lmao. Helped me out at least with the finance company lmao

[@RonTimmonsM1]

Great video valuable information and much appreciated 👍💯

[@Chance-ry1hq]

Change your recommended oil on time. Don’t put an aftermarket exhaust on your vehicle. Keep up on your maintenance. I have 220,000 on my 2016 Tahoe. I have never had a problem with it I get over 20mph. Why would I waste my money on this change?

[@fdroepman8351]

What happens if you put an aftermarket exhaust on the vehicle? Thanks

[@jimmysapien9961]

Me to 👍🏻 🙏🙏🙏

[@sama.7870]

Looking to buy a clean 2013 Yukon Denali XL. At idle the engine has a very slight, intermittent but persistent 'miss' - can feel it in the seat, hear it in the exhaust, and there is a very light 'click/tick' from the engine area. No codes. How likely is it that this idle miss and AFM/DOD lifter failure are related?

[@1982MCI]

Almost 100%

[@joshuaday3980]

Check the rear of bo5h exhaust manifds for broken bolt. Super common to break the rear ones and get a persistent tick, if the gap isn't to big alot of times the tick will go away when it gets hot from expansion. You pay someone alot of money to drill all the old bolts out and hope they don't screw up you have to buy a new cylinder head or dorma. Makes a bracket you can scre to the back of the head and uses a bolt to push the manifold back in place for like 10 or 15 bucks. I used it 3 years ago and I've have zero problems with it and no More tick tick tick at cold start. Again super super common problem, always assume the easy stuff 1st don't always assume the worst. And when in doubt, pay someone who knows what they're doing 50 or 100 bucks to give it a once over? Cheap peace of mind in my opinion.

[@johncurrie2949]

Excellent explanation ty

[@SummitRacing]

Thanks for watching !

[@MultiMustacheMan]

Did the Chevy Astro vans ever come with AFM?

[@davidchurchill1651]

Do the 2500s & 3500s have AFM motors?

[@mt1885]

Not on them.

[@jimmysapien9961]

Interesting

[@riverfallscory]

Will this work for my 22 5.3 silverado?

[@dennydeckerful]

Very informative.

[@dewaynemiguel3349]

The afm doesnt realy save fuel my 2010 suburban on a cross country trip coast to coast to see my son averaged 18.9 mpg for the entire trip,the next year I took the same trip I disabled the AFM and averaged 24.1 mpg for the entire trip so wheres the better fuel milage?

[@retiredperson4054]

So I have a 2012 Silverado 1500 with 120K miles. Since I am the 3rd owner I don't have a lot of info on the maintenance. But the engine runs well and the truck is very clean overall so I can only guess it was not "beat" too much? My question comes down to if I were to go with the RANGE AFM Disable OBD device, what about the HIGH PRESSURE Oil Pump -- will it start to cause Oil Burning as was mentioned in the video (By the way this was by far the best video I have found so far explaining the AFM system) Can someone address my question...? Thanks

[@barrypowell829]

I heard the same from the video. However yes oil is no longer need with the AFM deleted. With a range technology disabler. So once the range is in the OBD port. All 8 cylinders are activated. The excess oil is sprayed on the cylinder wall and oil pan. BUT he did say that’s it’s more prominent in higher RPM engines. So stay away from jack rabbit take offs! And don’t race the guy with loud pipes at red lights.

[@mitchburk5112]

Sounds like GM didn't do any better with this system than they did with the old Cadillac 8-6-4 system in the 80's. Isn't the definition insanity doing the same thing over and over and expecting a different result.

[@macbook802]

I have a 2018 Camaro with the 3.6 V6 and AFM, I need more clarification on how the delete device can make it run in V8 mode

[@brettservin4395]

😂. I don't think this product will add 2 cylinders to your block.

[@DIABLO_4_Tester_Sacramento]

Hello, i have vibrations when engine goes to the v4 mode. Could bad solenoids cause vibrations when engine goes to V4 mode? 2011 chevy camaro SS

[@norman7179]

I just assumed all the 5.3 L V-8 engines had AFM. I installed the RANGE on my 2014 Silverado but maybe I didn't need it ? Not sure if I can see under all the covers, etc to see if the valley cover is smooth or ribbed.

[@NorthwoodsAmerican]

It has AFM.

[@floydmayes4924]

I can see the plus for eliminating these fuel management systems. I just don't want to replace the cam with something that sits there and lopes like its got a full race cam in it!

[@Brian.8272]

I just bought a 2018 escalade with 42k miles, I had to replace the engine in my 2011 escalade at 117k miles, would it make sense to disable my AFM?

[@Cpcsof1]

If no air can get in or out with afm engaged, but the piston is still moving up and down, how does the cylinder fill with air and expel air everytime the piston goes up and down?

[@onemoremisfit]

The system has the ability to precisely time the valves to close at given points in crank rotation. It times the valves to close on squeeze (compression) for 2 cylinders, and suck (intake) on 2 cylinders that are directly opposite in the firing order. And the 4 that are squeezing and sucking against each other have their fuel injectors turned off. With 2 on squeeze and 2 on suck, they act like springs against each other. They are not pumping any air, that would defeat any advantage by causing the deactivated cylinders to do work.

[@SpynCycle57]

With AFM engaged, the air doesn't go in or out. The cylinder acts as an air spring.

[@joekrim6557]

Disconnect booster pressure sensor from brake booster. Everything still works but will set cel. V8 100 percent of the time.

[@zippyzipper8409]

Is that an electrical connection or hose

[@lazurm]

How many book hours of labor to delete the AFM, on average? I have a 2013 GMC Savana with the 5.3L engine.

[@MrIvesston]

The first time I did it it took me 24 hours straight. I did it with my body. Now, I could do it in about eight hours by myself. Maybe less time. Maybe six hours.

[@dickfitzinya3082]

@@MrIvesston Don’t you do most things with your body?

[@MrIvesston]

@@dickfitzinya3082 its fits cus its so tiny

[@Peter-do5ht]

@@dickfitzinya3082 his auto spell probably changed it from "buddy" to "body" or he misspelled " budy" and it changed it to "body " . Happens all the time . I think there's a way to turn the auto spell off

[@RednGold10]

To me the way he explained the delete kit makes me think that the delete program without using a delete kit would ruin your engine? No? He made it sound like you have to do the kit to avoid overusing oil and other things? If i can use one of there just programmers to turn off DOD i would but i dont want to hurt my truck by not replacing all the parts with a kit?

[@coreymoyers]

Would burning a little oil be worse than not having a high-pressure oil pump? It seems like a no-brainer to leave the high-pressure pump in the truck. How much oil could it burn over 5k miles?

[@AlaninUSA66]

I'm not sure but Melling says too much oil pressure causes increased wear but probably not if motor already has high miles.

[@Robert8455]

I was thinking about buying a new chevy truck with the 6.2 engine until I started doing some research. I was shocked what a horrible design GM dumped onto unsuspecting consumers.

[@bobby1970]

I think all of these manufacturers have a similar system now. It really sucks.

[@bijk1911]

@@bobby1970 Correct, Chevy has had them for a longggg time in the 5.3/6.2 trucks. Dodge has also had them in the 5.7 hemi for a long time also. Ford just implemented a cylinder deactivation system in the 5.0L. Solution: Just buy a range AFM disabler and call it done. Ran one in all my Chevy trucks and been using the same one for a few years and it still works.

[@DH-mf2lv]

ALL manufacturers don't have that garbage. Do your research. GM = Government Motors.

[@2birddogsandawolfdog945]

Why do you think everyone has Tundras now....

[@bobby1970]

@@2birddogsandawolfdog945 , I'm surprised the Tundra doesn't have cylinder deactivation? Are you sure? I'll have to do some research on that. I might have to consider getting me a Tundra.

[@Sephiroth5200]

Step 1: Own a 2009 Yukon flex fuel with 250k on it. Step 2: Be stupidly lucky and have the 5.3 LMG stuck in V8 mode, not V4.😎 Step 3: Use a Range AFM Disabler to make sure it stays that way. Step 4: AFM delete and full engine rebuild with a mild Corvette cam and lifters when the trans finally goes and gets rebuilt in another 100k. Step 5: Drive it another 10+ years. Learn to brew ethanol moonshine to keep the pig fed when gasoline is $10 a gallon.😂

[@AlaninUSA66]

Might hit that $10 a gallon soon especially if Israel/ Iran go at it or when ww3 fully starts

[@administratorperson3272]

yes to making ethenol at home!

[@jimmysapien9961]

Hee Haw

[@ronaldfisher795]

my 08 impala 9C-1 oil pressure sensor went bad now amf wont work....i replaced the sensor and it worked 2 weeks.. then sensor went bad also. runs fine . im leaving it alone