Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6

Threads
2.3K
Messages
35.6K
Threads
2.3K
Messages
35.6K
B
04 TB temperature needle drifts to the right when going up a hill

Drivetrain

Threads
981
Messages
12.2K
Threads
981
Messages
12.2K
jmonica
Has anybody replaced trans lines with braided hose, stainless steel or nylon?

Vortec 5.3L V8

Threads
360
Messages
4.8K
Threads
360
Messages
4.8K
H
P1682, P0689, P2176 codes and no start when warm

LS2 6.0L V8

Threads
36
Messages
802
Threads
36
Messages
802
T
Cylinder 6 Misfire Mystery
zaid3ssaf
SOLVED! Locked out
Replies
19
Views
391
Tankcruiser
Tankcruiser
B
Transmission Line leak at the wheel well head clamp... temporary fix?
Replies
32
Views
577
budwich
B
S
Cruising good only about 1.5 miles then she cuts off.
2
Replies
58
Views
768
Sprung Monkey
S
psa55
Oil/Grease Coming From Somewhere
Replies
8
Views
278
Reprise
Reprise
H
4x4 service light
Replies
2
Views
87
Hawkce541
H
J
Trans Cooler and Power Steering cooler/lines installed
Replies
11
Views
372
budwich
B
J
Does the 4.2 platform have an INERTIA CUTOFF SWITCH ?
Replies
4
Views
137
TollKeeper
TollKeeper
C
Transmission issues please help
Replies
19
Views
326
JayArr
JayArr
S
Difficulty removing clutch fan
2
Replies
48
Views
1K
Sprung Monkey
S
C
  • Locked
4l60e help please
Replies
8
Views
306
Blckshdw
Blckshdw
Metanoiahenery
I really need some advice before I blow up this truck😤
Replies
10
Views
436
northcreek
northcreek
C
no 3rd or 4th
Replies
3
Views
193
chris6822
C
L
2004 Envoy P0526 code
Replies
1
Views
107
Mooseman
Mooseman
R
Gotta replace Valve Cover Gasket
Replies
5
Views
261
gmcman
gmcman
D
Help! Truck cut off while driving and won’t start now.(Good battery)
Replies
11
Views
216
KEEBZ489
K
T
Temp Transmission Cooler Line Question
Replies
28
Views
920
matermark
matermark
C
NEED HELP Starter only clicks
Replies
18
Views
441
cretecrawler
C
C
4.2 keeps losing oil pressure
2
Replies
79
Views
2K
NJTB
N
gmcman
NEED HELP Replacing LH bearing in front diff, have questions.
Replies
19
Views
432
gmcman
gmcman
B
SOLVED! Randomly stalled and wont restart. P1515 p1516 codes.
Replies
10
Views
3K
JEREMY HALLETT
JEREMY HALLETT
S
02 envoy Transmission
Replies
13
Views
742
Reprise
Reprise
Ilikemy3s
Trans fluid color ?
Replies
7
Views
241
Ilikemy3s
Ilikemy3s
6716
SOLVED! CV axle will not budge
Replies
21
Views
824
Mektek
M
S
SOLVED! Trans oil cooler line connector issue
Replies
16
Views
674
matermark
matermark
K
transfercase output seal part # ?
Replies
4
Views
153
gmcman
gmcman
M
2006 envoy 4.2L no crank no start!!
Replies
9
Views
294
Motocross103
M
M
4x4 issue
Replies
5
Views
160
Mooseman
Mooseman
A
Transmission Cooler Line Fittings different for 2002?
Replies
8
Views
277
JayArr
JayArr
G
Strange oil pressure gauge reading.
Replies
4
Views
163
GeoGoGo
G
K
Truck died Need help asap
Replies
17
Views
368
KEEBZ489
K
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