Generation V Internal Engine 2013-20xx LT1

2020 Silverado 6.2 DOD problems

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Old Jan 15, 2022 | 10:02 PM
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Default 2020 Silverado 6.2 DOD problems

I truly don't want to start a fire storm here but there seems to be a lot opinions out there that the DOD on the 5.3/6.2 engines are just a problem waiting to happen.
My 2015 Silverado 6.2 had VVT/ DOD. 65,000 miles. Never had an issue. I traded it for a 2020 Silverado with a 6.2. Currently has 20,000 miles. Oh and the 10 speed trans in my 2020 is so much better than the 8 speed in my 2015.
What's the real word on DOD failures?
My 20 is still under Chev warranty.
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Old Jan 16, 2022 | 09:16 AM
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I don't know if there's any rhyme or reason to the failures.

I eliminated mine with a Diablo and Lew tune. It really wakes the 6.2 up and I can pull the tune off anytime I need to do so.
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Old Jan 16, 2022 | 09:45 AM
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DOD lifters can drop at any random time between 20 miles and 200K miles... you just never know. My 5.3 dropped one before 100K and I will never go through that again. If I ever have an engine with it, it's getting deleted immediately. If you have the cash then buy a full delete kit and get a tune. You'll get more power and depending on the cam you pick, even more.
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Old Jan 1, 2023 | 12:10 PM
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The new system is actually not DOD, its FAAFM now Full Authority Air Flow Management so essentially it always active unless you are idling, towing or WOT. The DOD lifter failures are rarely caused by the lifter itself, unless there is a defect in the part, which you will hear 1000s of customers complaining. Unless you are going for a max effort engine, I would just leave it alone. It's one of the best fuel saving devices out there especially with 93 octane at 4 bucks and higher....My wife's daily driver is a 2012 Yukon Denali with heads, cam, blower etc, it has 220k on the original DOD lifters and rotating set with 0 issues.....I have learned that alot of people that complain on here are either too dumb to actually understand what they are messing with or are too lazy to follow the manufacturers instructions.....GM has been doing this for years, they might know what they are doing....
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Old Jan 19, 2023 | 12:15 PM
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Originally Posted by camaross22
the new system is actually not dod, its faafm now full authority air flow management so essentially it always active unless you are idling, towing or wot. The dod lifter failures are rarely caused by the lifter itself, unless there is a defect in the part, which you will hear 1000s of customers complaining. Unless you are going for a max effort engine, i would just leave it alone. It's one of the best fuel saving devices out there especially with 93 octane at 4 bucks and higher....my wife's daily driver is a 2012 yukon denali with heads, cam, blower etc, it has 220k on the original dod lifters and rotating set with 0 issues.....i have learned that alot of people that complain on here are either too dumb to actually understand what they are messing with or are too lazy to follow the manufacturers instructions.....gm has been doing this for years, they might know what they are doing....
lol....
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Old Jan 19, 2023 | 01:41 PM
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Originally Posted by ramairws6
lol....
Lol indeed.. did someone from GM type all that? After having first hand experience with the GM engines before and after all of the fuel management systems.. (and everyone else I know) there is a CLEAR difference in reliability between the two. Also you can't really blame the auto manufacturers, they have to meet certain standards on fuel these days. The AFM stuff SUCKS. If I ever own another Chevy with it, it will be deleted before it leaves the lot.
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Old Jan 19, 2023 | 03:56 PM
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First thing,,, change the oil, often, like never over 6K if you have GM VVT or DOD.. Use anything not proper weight and DOXES rated at your own risk....

Then consider the ridiculous fail rates on the 4 cylinder Terrain, cam drives components...

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Old Jan 28, 2023 | 09:07 AM
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Originally Posted by CamaroSS22
The new system is actually not DOD, its FAAFM now Full Authority Air Flow Management so essentially it always active unless you are idling, towing or WOT. The DOD lifter failures are rarely caused by the lifter itself, unless there is a defect in the part, which you will hear 1000s of customers complaining. Unless you are going for a max effort engine, I would just leave it alone. It's one of the best fuel saving devices out there especially with 93 octane at 4 bucks and higher....My wife's daily driver is a 2012 Yukon Denali with heads, cam, blower etc, it has 220k on the original DOD lifters and rotating set with 0 issues.....I have learned that alot of people that complain on here are either too dumb to actually understand what they are messing with or are too lazy to follow the manufacturers instructions.....GM has been doing this for years, they might know what they are doing....
After reading that I appreciate the fact you only have 184 posts since 2004.
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Old Apr 8, 2023 | 01:41 AM
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Originally Posted by CamaroSS22
The new system is actually not DOD, its FAAFM now Full Authority Air Flow Management so essentially it always active unless you are idling, towing or WOT. The DOD lifter failures are rarely caused by the lifter itself, unless there is a defect in the part, which you will hear 1000s of customers complaining. Unless you are going for a max effort engine, I would just leave it alone. It's one of the best fuel saving devices out there especially with 93 octane at 4 bucks and higher....My wife's daily driver is a 2012 Yukon Denali with heads, cam, blower etc, it has 220k on the original DOD lifters and rotating set with 0 issues.....I have learned that alot of people that complain on here are either too dumb to actually understand what they are messing with or are too lazy to follow the manufacturers instructions.....GM has been doing this for years, they might know what they are doing....
Can you please educate me on what cause the dod lifters to fail eat up the camshaft about 50% of the time. Most of the time the active fuel cylinders have an oiling problem on them dropped cylinders. You’re saying people are dumb just trying to see if you are suffering dunning Krueger or not. Genuinely asking out of curiosity. I might be asking for extremities but I have to know if anyone knows their before and after fuel mileage after the delete. I’m aware that you might not be aware of the cost to repair cost more than the fuel savings. If you’re not replacing lifters you’re probably burning up high dollar torque converters and transmissions. That are tuned to slip because of dod
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