Engine & Drivetrain

Discuss engine and drivetrain items from brakes, transmissions, towing, error codes, anything in the engine bay and so on here.

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J
2021 GMC Yukon Denali Oil Burn
2
Replies
10
Views
2K
DontTaseMeBro
D
ranger0787
Engine failures
Replies
7
Views
343
swathdiver
swathdiver
J
Another 6.2 failure
2
Replies
12
Views
1K
Marky Dissod
M
ChrisYukon
Main Bearing Failure with 6.2L at 3,200 miles
6 7 8
Replies
70
Views
13K
DocDoug
D
S
21+ Suburban/Tahoe/Yukon E-LSD
Replies
7
Views
1K
swathdiver
swathdiver
X
2021 6.2 Tahoe eats oil like crazy - is this truck getting lifter issues soon?
2
Replies
10
Views
827
Bigburb3500
B
T
slight engine resonance through steering wheel
2
Replies
19
Views
587
TommyS
T
R
2023 Yukon Denali - 1700 miles failed engine
2
Replies
11
Views
6K
WalleyeMikeIII
WalleyeMikeIII
Smacdonald82
21 Yukon bad wheel bearing with only 30000 miles
2
Replies
16
Views
3K
Silvertahoe22
S
D
Service dog - how can I leave the engine running when I'm not in the car for longer than 20 minutes
3 4 5
Replies
42
Views
7K
DaveL
D
Vladimir2306
Extra fuel tank
2
Replies
18
Views
2K
Vladimir2306
Vladimir2306
P
Air/hydraulic noise coming from brake pedal when being applied. This is a 2023 Yukon Denali ultimate.
Replies
3
Views
565
tom3
tom3
Deuce16GMCs
Cylinder deactivation for the 2021-2023's?
3 4 5
Replies
49
Views
29K
nick14226
nick14226
C
21 Yukon Screech from rear passenger side when turning, braking at low speed
Replies
5
Views
274
WalleyeMikeIII
WalleyeMikeIII
K
2023 Tahoe won’t start
Replies
6
Views
473
WalleyeMikeIII
WalleyeMikeIII
J
2022 Tahoe Premier – New Transmission Needed at 8100 miles (under warranty)
2
Replies
12
Views
7K
DuraYuk
DuraYuk
D
Blackstone sample on replacement engine after 13k miles
2
Replies
18
Views
1K
Antonm
Antonm
Fast_AT4
CEL U0121
Replies
3
Views
563
Fast_AT4
Fast_AT4
Antonm
Maybe not all 6.2's have the bad lifter bore/ bearing wear issues
4 5 6
Replies
50
Views
5K
Antonm
Antonm
K5-Z71
Blackstone Oil Sample Analysis Report, EcoTech3 5.3
Replies
1
Views
250
Antonm
Antonm
D
The engine on the Yukon I got as a replacement for the Yukon that got two engine replacements needs replaced. Yes, you read that correctly.
2
Replies
17
Views
3K
Marky Dissod
M
X
Rotors have scratches. Normal?
2
Replies
12
Views
580
xycrazy
X
C
2023 Tahoe RST 6.2L Engine Stopped - starts with rattle
Replies
4
Views
624
ZKWBQD
Z
A
2021 Yukon slips when accelerating.
2
Replies
13
Views
6K
DontTaseMeBro
D
X
6.2 not a good idea because of issues?
2 3
Replies
27
Views
13K
Marky Dissod
M
X
Help: Does the 6.2L have Fuel Management (AFM/DFM)?
2
Replies
12
Views
16K
WalleyeMikeIII
WalleyeMikeIII
V
Disabling the auto shut down feature
2
Replies
17
Views
38K
RoadWarrior
RoadWarrior
J
21+ IRS SAG issues when towing product design (looking for someone in Michigan)
4 5 6
Replies
52
Views
10K
tagexpcom
tagexpcom
0x_2a
2023 6.2L L87 Engine Defect Bulletin! Yukon/Tahoe/Escalade/Suburban/Sierra/Silverado
Replies
5
Views
874
0x_2a
0x_2a
R
2024 Tahoe cranks but doesn't start _SOLVED
Replies
7
Views
633
rs1974
R
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