GM DOD/AFM Lifters operation explained, failures, how to delete. Why GM engines fail 5.3L 6.2L
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- เผยแพร่เมื่อ 12 ต.ค. 2023
- Yukon / Tahoe / Suburban / Escalade Owner’s manual Bells & whistles
• Yukon / Tahoe / Suburb...
Oil Pressure Sensor & Lifter screen filter Replacement 2015+ GM Yukon, Tahoe, Sierra, Silverado, sub
• Oil Pressure Sensor & ...
Dod lifter article
www.melling.com/wp-content/up...
*Still updating and uploading other videos, stay tuned
Camshaft used (Stock replacement for non-DOD) amzn.to/3ZriXiz
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Yukon / Tahoe / Suburban / Escalade Owner’s manual Bells & whistles
• Yukon / Tahoe / Suburb...
Huge shoutout to other great channels I used as a reference for this project. See below for their channels
• DOD/AFM
Perform at your own risk. I assume no liability for injury, damage, death, etc. Refer to your owners manual. Demonstration purposes only
I am an amazon affiliate, so purchasing through the links I provide may support the channel with a small referral commission. - แนวปฏิบัติและการใช้ชีวิต
I just got myself a 2019 Yukon,your playlist has come in handy as a first time owner,never delete it 🙌🏽
Thank You for doing this, Danny. I feel more at ease while enjoying my '16 Suburban. I replace the oil and filter myself every 3000 miles.
That is definitely a good idea
My Silverado has the full delete afm lifters taken out changed camshaft all the trash afm components are gone and my 5.3 runs amazing and it doesn't burn no oil at all
Nicely explained overview. My wife's 2013 Escalade has 184K and I just noticed lifter noise today, it sounds like it is just one, so I hope it will be a relatively inexpensive fix!
I picked up a 2020 Silverado in 2019 with $8k off for a Labor Day special. I have put on 158K since the purchase with regular oil changes and your standard parts needing replaced (belts, filters, tires, etc.). I use the truck for hauling, weekend wheeling, don’t seem to shy away from putting the beans to the throttle when I desire, so… I just got the tapping sound I didn’t want to hear, so I’m glad for this video. Once I go through with the cam and valve change, I’ll be in hopes of driving the Trail Boss to 500k. It replaced my previous Silverado that had 449k on it and I’ve had Chevy trucks since the 80’s and don’t hold much grudge against Chevy trying new things.. I’ll let you know once I get to 500k with the 2020. Thanks again for the video!
Awesome. I’m glad it lasted that long. Here is my walkthrough video if you’re interested:
DOD AFM Delete Yukon, Tahoe, Silverado, Sierra, Escalade 6.2L & 5.3L Replace cam & lifters Part 1
th-cam.com/video/cWayyZGNYRI/w-d-xo.html
The only reason GM does this bullshit is because of stupid regulations. Not because GM is trying new stuff.
I got tired of driving in M5, so I purchased the Diablo Tuner and disabled the AFM. I also deleted the 180° Trans thermostat and put in the Sure Cool part # STL010 for cooler temps. Also added a PCV oil catch can. I'm at 86,478 miles, only problems I've had was #6 fuel injector, engine thermostat, and vacuum pump. I've done 2 trans flushes and change my engine oil at 4,500-5,000 miles.
I'd suggest moving that oil change up to the 3k mark and keeping it there. Stretching it even to the 4,500 mark is getting my pucker factor going. So unless you have an extra large oil pan or a few extra $K laying around...
Thanks for the heads up
Thank you Danny for your effort, I have 5.3L Yukon 2017 and I’m experiencing a shaky ride at 40-50km speed when switching from v8 to v4!
Is probably start with turning off the 4cly mode electronically and see how long it goes. Physically deleting it like I show in the videos is a large process with a lot of variables. th-cam.com/video/cWayyZGNYRI/w-d-xo.htmlsi=keJn2wzhlxD2lxVQ
Do you know about the M5 truck that stops the AFM from operating? Depending on the odo reading, there could be a few other variables that can cause the vibrations. Alignment, Tires and wheels being unbalanced or our of round, front end suspension parts being warn or not properly lubed, axle outer seals, drive line being out of balance or the U-joints going bad, trany not operating properly or needing a simple flush to name a few. One thing I noticed on my truck is that the front lower engine cover that is also an air dam will make your truck feel different if it is not on there, and the faster you go, the more it changes the aerodynamics and can create a vibration.
The cover on my engine was cracked and part of it would hang down. I removed it and drove around like that for a few weeks. I noticed a new noise and feel on the highway. So I replaced it and that all went away.
Did you find out what it was? My truck does the same thing
This just happened to my 21 Silverado as well. Same fix same concerns
what do u think about deleting the afm? i have the same truck but i have the 2.7 turbo. im thinking of deleting it? what do u think
Always a chevy guy, but was awakened when the dealer had to replace 8 lifters in my 21 Silverado at just 16k miles. What about the other 8? I'm now wondering if the cam is damaged and metal floating around in my engine. No longer trusting I'll ever make it to higher mileage. Considering selling my truck or having a rebuild with conventional lifters, but then there is the emmission test problem.... GM has known about this, and I"m just discusted.... Basically we can just thank the government.
My 2015 5.3L just failed, replaced with a Jasper engine with AFM delete. Love the new motor.
@bobart1790 why did you replace the engine, rather than just having the dod delete done? Higher mileage and new engine the vest option in your case?
@@TheDbrewer31 The first shop that diagnosed my issue quoted $7k for a cam and lifter rebuild only. He also quoted $13k for a Jasper, and $14k for a GM original. A friend recommended a shop In the city, they quoted $9k for the Jasper , thus I went that route. I now have a 36 month, 100k parts and labor warranty. If I were 20 years younger,I may have attempted the repair my self. And the other reason for replacement, forgot to mention, around 52k miles, my oil pump failed, thankfully I had that repaired under warranty. I was skeptical on what else would happen if we only repaired the cam and lifters. The cam was damaged by the stuck lifter.
@bobart1790 I'm getting mine done (full dod delete) for roughly $3000.00 or slightly over. I ordered the GM parts (GM cam and GM lifters) kit on AMS Racing. Kit, with tuner, and the 3 extra recommended add ons, was around the $1600.00 mark. Then I had to get the exhaust manifold gaskets and intake gaskets, along with a new timing belt tensioner for about $ 170.00 more. A mechanic, that's friends with me is doing the labor for roughly $1000.00. I'm sure I'll need a few odds and ends to get during the process, thus the reason I figured in the $3000.00. I'm sure I'll definitely need a new push rod or 2
Thanks for video! I tried to explain to my wife! Video did better!
Now that everyone understands how these lifters work and how they get stuck in the collapsed position maybe people will quit arguing that adding a range disabler or disabling AFM will greatly decrease this type of lifter event because you are keeping it from collapsing in the first place.👍
Hmm but if there is no chance of a "missed time switching event" aka lifters would be active all the time with a disabler, keeping the engine oil changed regularly, the "probabilities" of a collapsed lifter, or locking pins wearing out, is lessened no?
@@operationsword9457 yeah, will the disablers help or not??? have an expensive 2023 Yukon xl denali that I would like to keep a longtime engine problem free:)
So instead of rebuilding the 5.3 from my 08 Suburban, I decided to pull it and put in another motor. Found a lower mileage 5.3 from an express, since the 1500 vans didn't have the dod program. I already had a guy called lt1 swap or something remove the program from the computer. Question, the valley covers are different, since the express doesn't have the solenoids. Should I use the cover from the Suburban since it has a plug that goes from the solenoids to the computer, or will it matter at all since the program is deactivated?
I left mine all there but turned off, so I think either will work as long as the dod is turned off (or set to come on at an impossible rpm like 12,000 rpm). As I understand for the oil pump side, you just want to make sure the oil pump isn’t trying to send more psi thinking it’s still active.
@@dannyjohnsonsgarage how would you do that lol, on the oil pump?
Best way to fix this issue is get a different car and never buy another GM V8.
Hence my tundra and sequoia Toyota Sequoia
th-cam.com/play/PLIjr-uSYDZi4VVY98CUqYZPQMptDhexbN.html
Toyota Tundra Playlist
th-cam.com/play/PLIjr-uSYDZi57XD9z82F06EWPIA6KBhzI.html
Yah ok
@@dannyjohnsonsgarageyou might want to take a look at the issues the Tundra is having since 2022! It's just as bad as the trash gm made
@@itscoldinwinter1 yeah, that’s why I went with the 2021 with the V8. I trust Toyota the most but I think they are bound to have issues with the V6 TT being new and more complicated
Any update on how its going since you deleted yours, dependability much better and no issues hopefully. I am about to do mine and hope this will be a good longterm fix!
Good so far: DOD AFM Delete Yukon, Tahoe, Silverado, Sierra, Escalade 6.2L & 5.3L Replace cam & lifters Part 1
th-cam.com/video/cWayyZGNYRI/w-d-xo.html
Danny, I own a 2015 Yukon with the 6.2 liter hooked to a 5 speed automatic. Within the first 80,000 miles I had two lifters failures resulting in the last one to have the cam replaced. Since then I have been running it in manual 5 mode resulting in zero lifter issues. I have 130,000 miles on it now. Is what I am doing a good long term resolution?
As long as you keep your oil, change, religiously and clean, the systems are super susceptible to any amount of sludge or carbon buildup. Keep your oil changed every three or 4000 miles and you should be fine running it in manual mode.
@@MacdoNaldi67 I wonder about this, because I have a 2010 5.3, and so far it hasn't failed. I am not the original owner, so I don't know if the first owner did anything to the AFM. However, I am at 109k, but I also use the M5 for now. I always change the oil at 3k, and now I am using Valvoline restore and protect.
@@jmackinjersey1you notice how in the video he says the lifter gets stuck in the collapsed position? Will adding a range disabler or tuning out AFM will greatly decrease your chances of having an issue because the lifters won't collapse in the first place this way they don't get stuck the pins don't wear out.
Do you recommend disabling the afm before this happens , by module or tuner?
Yes. It may keep a timing event failure from happening. I’ve only seen 1-2 miles per gallon difference in v8 mode constantly as well
You notice how he said the lifters get stuck in the collapsed position? If you disable delete or add a range disabler the lifters don't collapse greatly decreasing your chance of having an issue.
@@johnsmith3735 Yes, its all about probabilities. They greatly decrease with a module or tune. Less likely a timing event or worn out locking pins as they are now not used at all. It makes sense.
My 2015 escalade lifters keep getting stuck. First it was lifter #1 then lifter #2 got stuck. Mechanic fixed it. while he was testing the car lifter #4 got stuck after getting done with that lifter 1 got stuck again. It’s been mess changed all lifters and polished the block 🤦♂️ still same issue we even replaced the valve lifter manifold
Plus the cam is in perfect shape and oil pressure is 170-200 kpa while idle. If anyone got any suggestions please share
There are delete kits to give you all regular lifters but it requires a tune. DOD AFM Delete Yukon, Tahoe, Silverado, Sierra, Escalade 6.2L & 5.3L Replace cam & lifters Part 1
th-cam.com/video/cWayyZGNYRI/w-d-xo.html
Looks to me like the system is designed to fail under normal use. That and transmission issues are making GM look pretty sketchy, no more for me.
Even the dod system can ruin the transmission as it changes to 4 cylinder mode from what I’m hearing
GM just cant seem to get this fixed.
I think they’ve added even more cylinders with dynamic fuel management
Unfortunately, the government forces auto manufacturers to get better fuel efficiency by a certain percentage every year. This is what's truly screwing the customer.
@@TheDbrewer31and the EPA!
If a lifter sticks and you're 20 plus miles from home, you drive it home, can a total dod delete still be an option? Or has the drive home taken out the motor beyond repair?
It would be better than my lifter failing and putting metal in the engine as far as that goes, but it may have a bent pushrod if it had a mid timing event, which can still be repaired in most cases. Once you have it apart you can see what the best option is. Sometimes a new engine to drop on is less risk and hassle th-cam.com/video/cWayyZGNYRI/w-d-xo.htmlsi=b9wEDgZegqqzFsd5
Never did hear why just shutting it off with a tune would not fix this situation. No Oil being sent to from the VLOM means no activation and miss time issue's. Lifters stay in "locked out' state and cant compress. Did i miss something?
It will keep the timing events from happening, and if the lifters don’t have a lot of milage on them, the pins may not be worn down and the lifter shouldn’t collapse. Unfortunately, even in my case, the regular lifter is what failed. It’s just too many variables with this setup. I would definitely turn it off and just see what happens
Ah ok. Yeah I have had mine disabled on my 2016 for last 50k miles. 117k on ot now. The best thing I did was start running motorkote
185K on my '08 1500. I turned my AFM off I think probably around 2015. I change my oil every 4K. Just recently noticed a tapping at idle when the engine was warmed up. I bumped the throttle and it went away. 5 min later while still idling it started taping again. Again bumped throttle and it went away. Yesterday I heard it when cruising slowing through town, I would bump the throttle but it didn't go away for about 3 minutes.
Not sure if it's the lifters or timing chain or what.. it's intermittent though.
People are saying no joke a quart of ATF in the oil over time and maybe multiple oil changes can clean out the lifters to where this goes away. They swear it works. I don't know, I think I'm going to try it as my other option is spending thousands on deleting. Sounds like it's all the same parts to replace if there's an actual failure right?
At what mileage do these lifters fail? I’m sitting at 77,000 miles on my 2012 Sierra and want to rebuild to make more power when the lifters go bad
I'd do it before then. When the lifters go bad they can cause catastrophic damage. $$
Lifters can go bad at anytime, mine failed a 3,900 miles. (2021 Silverado 5.3 V-8)
Unfortunately, or fortunately, depending on how you look at it, there is not one set amount of miles that make these crazy things happen. I've seen it happen on new trucks with less than 3k or trucks with over 150k or even 200k never have an issue. There is no telling when or even if it will happen.
So is it true that changing the oil at 3k helps prevent this issue or not really?
It would definitely help with not clogging up the small hole the oil goes into to collapse the lifter.
What about a seafoam treatment? Ive heard some people have good experiences with this treatment
@@DavidRamirez-kv9xc I usually do a seafoam (1oz to a quart) and idle it for about an hour before draining it. It seems to clean better on all my rigs.
Is it economic to do all this work on an older vehicle?
Well, if the lifters and cam fail, you will be doing it after it fails and leaves you stranded.
You’d be a fool to buy any DOD GM without a warranty.
i got a kit off amazon without camssjaft says the kit "not needed" i installed now my engine is in 4 cil mode any ideas?
Just a plug in kit for the computer or the lifters?
Careful with the amazon afm disablers. The reviews have tons of people complaining of problems with unrelated things going wrong, only trust the" range "brand disabler
I am going to buy an $70k vehicle…. First modification… altering the factory engine so it doesn’t fail…
Crazy. Just crazy.
I have a full playlist of repairs you shouldn’t have to worry about with such an expensive vehicle. The lifters, transmission harness, trim panels, so many things
Yukon / Tahoe / Suburban / Escalade Owner’s manual Bells & whistles
th-cam.com/play/PLIjr-uSYDZi7J7EQ1ErTn1Yzi6ET_3Ssr.html
Besides a delete, what methods can be done to reduce the odds of a lifter failure? Frequent oil changes?...Driving in L9 or L7 depending on your transmission?...
Yes, oil changes are the best- way earlier than the timer set. I’d go back to 3,000 miles or so and make sure the level is always full
What about seafoam from time to time?
@@DavidRamirez-kv9xc I just started using Valvoline Restore and Protect to clean the internal parts of my engine. I am hoping this will keep my small oil passages clean. I change my oil at 3k all the time as well as got my transmission flushed at around 80k miles.
Also keep your coolant topped off and flushed every 40k miles or so and use distilled water if you buy the concentrate and need to mix it.
I'm not sure why people can't understand this. Most of the time the lifter gets stuck in the collapsed position if you add a AFM disabler like range Technologies you are keeping the lifter from collapsing in the first place. This will greatly reduce you having an issue because the lifter is not collapsing.🤯🤯🤯
@@johnsmith3735 Yeah driving in L7 or L9 depending on if you have an 8-speed or 10-speed disables the AFM/DFM and the engine is running in 8-cylinder mode all the time.
What years have the dod?
2007-2014 select models and all 2015+.
AFM was introduced by GM in 2005 in several models.
What about the computer, it has to be reprogramed. GM won"t do it.
This motor engineering does not make sense why make an engine that will fail
Gm lost me as a long time customer with this Terrible feature.
Me too