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L
lt1gmc
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Jan 14, 2011
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Friday at 7:58 PM
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L
lt1gmc
replied to the thread
#3 Cylinder Misfire Cause Found
.
One thing most don't remember about oil viscosity ratings: They are comparing oil protection ratings and not actual pour viscosity. For...
Friday at 7:58 PM
L
lt1gmc
replied to the thread
#3 Cylinder Misfire Cause Found
.
ON swapping out my cam for the non-afm cam and lifters I found 5 pushrod ends at the rocker with unusual wear, and thus the rocker worn...
Thursday at 6:06 PM
L
lt1gmc
replied to the thread
Why does 6.2 seem to have more AFM lifter failures than 5.3?
.
DFM is not on this generation of trucks, these trucks are only V8 or V4.
Thursday at 5:59 PM
L
lt1gmc
replied to the thread
Another 5.3 AFM Dead Lifter Issue - Help Me Decide What to Do
.
You have to have to have driven it a good bit after knowing you had a problem to have that much metal everywhere. Your oil filter...
Thursday at 5:57 PM
L
lt1gmc
replied to the thread
Non-AFM lifter failure poll
.
I am hoping to get some responses on how many non-afm lifter failures are on the intake lifter.
Jul 1, 2025
L
lt1gmc
posted the thread
Non-AFM lifter failure poll
in
Engine & Drivetrain
.
Of the many of our generation engines that have had a non-AFM lifter failure, how many have been on the intake lifter? There is a recent...
Jun 29, 2025
L
lt1gmc
posted the thread
Why does 6.2 seem to have more AFM lifter failures than 5.3?
in
Engine & Drivetrain
.
Since the 6.2 uses the same lifters and afm system that the 5.3 uses, I believe I know why the 6.2 seems to fail more often. Since the...
Jun 13, 2025
L
lt1gmc
replied to the thread
Misfire & Carbon deposit help
.
It would take a lot of oil coming thru the intake to foul the plugs. Pull the intake hose off the throttle body to see if there is a lot...
May 30, 2025
L
lt1gmc
reacted to
dgjtools's post
in the thread
2020 with 10L80 transmission: how to fill fluid?
with
Like
.
The 2018-2020 10L80 10 Speed transmissions (MF6) factory fill procedure does NOT use the plugs on the side of the transmission. All...
May 29, 2025
L
lt1gmc
replied to the thread
Bad lifters?
.
My point was to replace ALL the lifters as non-afm one fail too, AND do a full delete and not go back to an afm cam and lifters.
May 29, 2025
L
lt1gmc
replied to the thread
Bad lifters?
.
If a bad lifter and has damaged the cam then a full delete is a good option. Replace all the lifters. Not all lifter failures are a afm...
May 29, 2025
L
lt1gmc
replied to the thread
Misfire & Carbon deposit help
.
Not DI buildup, that would be on the intake valve. Could be leaking injector, or bad lifter/cam lobe which is what I found on mine. Not...
May 29, 2025
L
lt1gmc
posted the thread
#3 Lifter roller failure, any known cause?
in
Engine & Drivetrain
.
Having found a bad lifter roller on #3 cylinder on my 19 6.2 Denali, I am trying to determine why. Engine perfectly like new inside, 97K...
May 28, 2025
L
lt1gmc
posted the thread
#3 Cylinder Misfire Cause Found
in
Engine & Drivetrain
.
My 2019 96K mile Denali 6.2 developed a #3 misfire, first with just a slightly noticeable rougher idle, then later on a stored code and...
May 23, 2025
L
lt1gmc
replied to the thread
2020 Tahoe 6.2L Misfire and Flashing engine light and Traction Control Light on
.
My #3 misfire after swapping coils, sparkplugs (that one was black on one side), wires, new injectors, checking ignition pulses, ended...
May 22, 2025
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