Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

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

Drivetrain New

1.1K
13.3K
Threads
1.1K
Posts
13.3K
TollKeeper
Re-using Torque converters

Vortec 5.3L V8 New

394
5.2K
Threads
394
Posts
5.2K
0
Runs rough couple miles after starting

LS2 6.0L V8

40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
C
Never knew we can Flat Tow our 4x4 Envoys, Trailblazers, etc.
Replies
3
Views
49
TollKeeper
TollKeeper
C
BG Products E.P.R. Seems to be helping oil consumption
Replies
3
Views
237
Mike534x
Mike534x
Dmflash
P0495 code
Replies
9
Views
393
Mooseman
Mooseman
l008com
Is this amount of differential play normal?
Replies
2
Views
87
l008com
l008com
S
Got stranded
Replies
13
Views
390
Mike534x
Mike534x
zaid3ssaf
4.2L Dieseling sound
Replies
20
Views
2K
Mooseman
Mooseman
flyboy2610
What happens if you overfill your engine oil?
Replies
4
Views
173
flyboy2610
flyboy2610
W
Defective Battery or did my TB fry it?
Replies
4
Views
207
mrrsm
mrrsm
W
Thermostat Preventative/Proactive Replacement
Replies
13
Views
673
wormwood1978
W
T
NEED HELP Please, help accessing front 3 bolts on oil pan in order to remove it.
Replies
2
Views
199
Mooseman
Mooseman
M
2005 Trailblazer Starting Issues.
Replies
7
Views
569
Realism
Realism
Btorres1977GContractor
Please Help Identify Broken Sensor
Replies
1
Views
274
mrrsm
mrrsm
C
Worth picking up an extra engine?
Replies
6
Views
422
c good
C
MPB
New York State inspection fail
Replies
11
Views
498
AmpOverload
AmpOverload
Ilikemy3s
Bound to happen sooner or later
Replies
5
Views
349
mrrsm
mrrsm
Realism
Whirring buzz from under the hood, take a guess
Replies
12
Views
648
Realism
Realism
K
2002 Trailblazer airbox question
Replies
3
Views
230
Blckshdw
Blckshdw
movietvet
2002 TB 4.2 died at stop & immediate restart
Replies
51
Views
2K
movietvet
movietvet
C
BG EPR oil treatment?
Replies
3
Views
376
Mooseman
Mooseman
C
Do the 5.3 Envoys and Trailblazers have the "Tow/Haul" feature?
Replies
6
Views
531
Mooseman
Mooseman
C
2002 Envoy, 4x4. Starter motor replacement tips?
Replies
6
Views
361
TollKeeper
TollKeeper
S
Slight hesitation/vibration at idle
Replies
10
Views
518
mrrsm
mrrsm
Dmflash
Wheel bearing hub assembly
Replies
68
Views
4K
far eastan
F
l008com
NAPA High Mileage Oil?
Replies
4
Views
707
Know1else
K
ghost_leader07
NEED HELP Possible bad fuel pump (confirmation needed)
Replies
28
Views
1K
mrrsm
mrrsm
B
No crank no start isn't it lovely
Replies
83
Views
2K
bennieRohde
B
M
E-Fan issue
Replies
5
Views
445
Mooseman
Mooseman
ghost_leader07
NEED HELP P0171 on my 04 Trailblazer LT won't go away
Replies
117
Views
8K
mrrsm
mrrsm
gmcman
Where can I get the TCC PWM eliminator kit?
Replies
3
Views
504
Sparky
Sparky
RiverGuy
Confirmed: Clearing codes re-enables Cruise Control
Replies
4
Views
854
AmpOverload
AmpOverload
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