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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lost1wing
First oil change at 1455 miles
Replies
14
Views
247
Fless
Fless
M
Engine lags on my 5.3
Replies
9
Views
210
blanchard7684
B
S
Anyone used UPF63R on 5.3L?
Replies
3
Views
50
LsHart
LsHart
D
BREAKING: GM is officially recalling the L87
129 130 131
Replies
3K
Views
225K
BacDoc
BacDoc
WalleyeMikeIII
Lost the 6.2 (was: May have Lost the 6.2)
8 9 10
Replies
190
Views
7K
KMeloney
KMeloney
D
What is the consensus on replacement engine battery?
2 3 4
Replies
60
Views
1K
09_4WD_YUKON
09_4WD_YUKON
S
Vibration (like buffeting) 68-73MPH new tires, 3 different shops checked
2
Replies
36
Views
939
jfoj
J
fondupot
Blackstone Labs - Oil Analysis Report
Replies
13
Views
269
DontTaseMeBro
D
J
6.2 engine problems
2
Replies
30
Views
2K
JayceeP
J
Gnarley
Modern engine diagnostics
Replies
8
Views
1K
Fless
Fless
V
Considering how GM screwed us with the oil, what about the ATF?
2
Replies
27
Views
1K
jfoj
J
S
transmission pan seal leak after fluid change, twice!!!
Replies
12
Views
303
DontTaseMeBro
D
L
brembo upgrade on my 2023 z71 4x4 now with service brake assist alert
Replies
8
Views
1K
BacDoc
BacDoc
A
Electronic issue?
Replies
1
Views
69
Blueinterceptor
B
E
l5p can bus plugs
Replies
1
Views
86
Fless
Fless
kurtibm
GM added more trucks and SUVs to its 10-speed valve body recall campaign; some owners to come back for a do-over.
Replies
2
Views
606
MarvinVR
MarvinVR
Too_L8T
Another oil weight question
2 3
Replies
49
Views
2K
Marky Dissod
M
S
4wd usage
Replies
12
Views
355
swathdiver
swathdiver
C
Going to chance it
Replies
3
Views
135
Miami-Dade
Miami-Dade
Fast_AT4
Big 3 Question(s)
Replies
4
Views
166
Fast_AT4
Fast_AT4
Staceyr72
Transmission valve body-no parts to be found
2 3 4
Replies
69
Views
13K
jfoj
J
TheAgency
2023 6.2 with Failed Oil Cooler at 61k
Replies
5
Views
336
jfoj
J
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
34
Views
13K
RST Dana
RST Dana
K
2021 Tahoe CEL (P00ff and U1962)
Replies
10
Views
541
Steve Smith
Steve Smith
C
Transfer case swap? Single speed to two speed
Replies
8
Views
576
cbahleda2669
C
OR VietVet
10 speed transmission lock up problems 2019 thru 2022
Replies
2
Views
143
Marky Dissod
M
2
2021 Tahoe / Yukon / Escalade Safety Recall
Replies
15
Views
2K
KMeloney
KMeloney
lost1wing
DFM module for 2026
2
Replies
26
Views
1K
ReaperHWK
ReaperHWK
M
2025 Tahoe 6.2-liter V8 Stuttering Engine
Replies
4
Views
404
LegalBrief
LegalBrief
R
Question on 6.2L Engine tests
Replies
17
Views
720
Fless
Fless
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