Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6

Threads
2.2K
Messages
34.2K
Threads
2.2K
Messages
34.2K
Daniel644
Oil Pressure Gauge Issues

Drivetrain

Threads
939
Messages
11.7K
Threads
939
Messages
11.7K
JayArr
PCM of NC Transmission oil cooler kit. Disappointing to say the least
  • JayArr

Vortec 5.3L V8

Threads
349
Messages
4.6K
Threads
349
Messages
4.6K
Mooseman
O2 sensor washer hack

LS2 6.0L V8

Threads
35
Messages
768
Threads
35
Messages
768
xavierny25
NEED HELP Tb SS transmission replacement.
ghenny440
Its a few years, but im back
Replies
1
Views
27
MRRSM
MRRSM
P
The dreaded Transmission Flush
2
Replies
49
Views
7K
gmcman
gmcman
zaid3ssaf
Front crankshaft seal leak... Additive?
Replies
8
Views
137
Mektek
M
M
SOLVED! Electrical Gremlins
Replies
9
Views
163
mateo
M
T
NEED HELP Cylinder Head and timing chain headaches.
Replies
22
Views
457
tucker12
T
Aec678
NEED HELP Fan Clutch from hell lol
2
Replies
58
Views
555
TJBaker57
TJBaker57
M
Temporary misfire
Replies
12
Views
168
Machoman
M
ghost_leader07
Grinding noise a specific RPM
Replies
16
Views
158
gmcman
gmcman
S
NEED HELP saab97x5.3i Where are the rust spots on the transmission tubes?
Replies
11
Views
196
gmcman
gmcman
psa55
4WD Disconnect Advice
Replies
10
Views
277
BrianF
B
G
Supercharger kit?!
Replies
2
Views
126
gmcman
gmcman
gmcman
High output alternator for the 4.2L
Replies
7
Views
154
gmcman
gmcman
psa55
Pre-Oil Change
Replies
12
Views
239
psa55
psa55
J
Dipstick Readings Very Erratic
Replies
11
Views
219
Jkb242
J
N
Engine mount heat shield
Replies
3
Views
146
NJTB
N
E
Low oil pressure with P0014 and P0016
Replies
23
Views
403
gmcman
gmcman
W
Help with engine noise, video included
Replies
12
Views
698
wormwood1978
W
TJBaker57
Test for mis-matched axle ratio
Replies
2
Views
122
TJBaker57
TJBaker57
NODAYSOFF
Big 3 Wiring Upgrade & High output alternator
Replies
9
Views
255
xavierny25
xavierny25
D
rear end clunks
Replies
3
Views
194
davidaward47
D
Ric_Whit
Replacing Crankshaft Front Seal [SOLVED]
2
Replies
79
Views
8K
djjunior305
D
K
Envoy inline 4.2 aux fan help
Replies
4
Views
153
Mooseman
Mooseman
M
Cam Position Sensor p0340
Replies
3
Views
184
Mektek
M
G
Engine run-on
Replies
8
Views
250
Gmtb03
G
6716
P0107 P0122 P0223
Replies
0
Views
80
6716
6716
psa55
NEED HELP P0651
Replies
16
Views
373
TJBaker57
TJBaker57
BanditGTP
4wd Axle Disconnect...Replace or Repair
Replies
6
Views
402
Mektek
M
J
Trailblazer crank no start
Replies
27
Views
431
TollKeeper
TollKeeper
O
Cranks but no start, CEL light and reduced power light
Replies
3
Views
205
gmcman
gmcman
gmcman
Starter not staying energized
Replies
12
Views
273
gmcman
gmcman
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