Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.5K
38.9K
Threads
2.5K
Posts
38.9K
mrrsm
Only 3000 miles on oil, but One year old. Change filter too?

Drivetrain New

1.1K
13.3K
Threads
1.1K
Posts
13.3K
filthyfingers
NEED HELP Tranny slipping and surging. 4WD switch flashing

Vortec 5.3L V8 New

393
5.2K
Threads
393
Posts
5.2K
christo829
Rate this Used Airfilter

LS2 6.0L V8

40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
l008com
Is this amount of differential play normal?
Replies
2
Views
21
l008com
l008com
C
BG Products E.P.R. Seems to be helping oil consumption
Replies
0
Views
113
c good
C
flyboy2610
What happens if you overfill your engine oil?
Replies
4
Views
139
flyboy2610
flyboy2610
W
Defective Battery or did my TB fry it?
Replies
4
Views
157
mrrsm
mrrsm
T
NEED HELP Please, help accessing front 3 bolts on oil pan in order to remove it.
Replies
2
Views
179
Mooseman
Mooseman
K
2002 Trailblazer airbox question
Replies
3
Views
207
Blckshdw
Blckshdw
J
How to remove battery tray 2004 TB LS?
Replies
2
Views
252
Mooseman
Mooseman
Btorres1977GContractor
Please Help Identify Broken Sensor
Replies
1
Views
256
mrrsm
mrrsm
S
Got stranded
Replies
13
Views
288
Mike534x
Mike534x
Firebyrd91
Low Voltage to Transmission Pressure Switch
Replies
0
Views
292
Firebyrd91
Firebyrd91
gmcman
Alternator compatibility between years
Replies
2
Views
301
gmcman
gmcman
C
05 sierra Stuck in 2nd
Replies
2
Views
303
Mooseman
Mooseman
Dmflash
P0495 code
Replies
6
Views
308
Mooseman
Mooseman
Ilikemy3s
Bound to happen sooner or later
Replies
5
Views
309
mrrsm
mrrsm
C
2002 Envoy, 4x4. Starter motor replacement tips?
Replies
6
Views
335
TollKeeper
TollKeeper
C
BG EPR oil treatment?
Replies
3
Views
336
Mooseman
Mooseman
Petnatcar
FUEL FILTER for 2005, 4.2, 4WD
Replies
3
Views
360
Petnatcar
Petnatcar
K
Can a ignition cylinder be recorded to an old key without the previous ignition cylinder?
Replies
2
Views
360
mrrsm
mrrsm
H
2006 trailblazer rear a/c line replacement
Replies
1
Views
380
Mooseman
Mooseman
02trailblazerLS
Beat auxiliary cooler to get
Replies
1
Views
395
Mooseman
Mooseman
C
Worth picking up an extra engine?
Replies
6
Views
398
c good
C
T
2003 Trailblazer LT Ext cranks but wont start no fuel pressure
Replies
6
Views
410
Mooseman
Mooseman
W
Exhaust Pipe to Manifold Gasket
Replies
5
Views
410
wormwood1978
W
M
E-Fan issue
Replies
5
Views
413
Mooseman
Mooseman
MPB
New York State inspection fail
Replies
11
Views
442
AmpOverload
AmpOverload
gmcman
Transmission compatibility of pre '06 models
Replies
2
Views
452
gmcman
gmcman
C
Do the 5.3 Envoys and Trailblazers have the "Tow/Haul" feature?
Replies
6
Views
456
Mooseman
Mooseman
B
NEED HELP Question 🤔
Replies
2
Views
458
Redbeard
R
C
Fluid Service interval for Transfer case?
Replies
3
Views
462
c good
C
C
Piston slap or rod knock?
Replies
2
Views
466
littleblazer
littleblazer
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