Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.5K
38.9K
Threads
2.5K
Posts
38.9K
S
PO442

Drivetrain New

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

Vortec 5.3L V8 New

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

LS2 6.0L V8

40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
l008com
Trying to Decode my Error Code(s)
Replies
21
Views
1K
Mooseman
Mooseman
Yeagamyster04
Tbss intake injectors and throttle body upgrade then I lost 2nd gear 😔
Replies
3
Views
531
Yeagamyster04
Yeagamyster04
mattpaul89
SOLVED! 4.2 cam phaser 03 Tb Ext LT
Replies
12
Views
1K
mrrsm
mrrsm
C
Piston slap or rod knock?
Replies
2
Views
474
littleblazer
littleblazer
mrrsm
ENGINE SWAP: 2004 for 2002 GM ATLAS 4.2L MOTOR
Replies
168
Views
31K
mrrsm
mrrsm
S
knocking noise from transmission and stalling
Replies
9
Views
2K
mrrsm
mrrsm
E
Doing DoD delete on 05 Envoy 5.3, which cam do I choose?
Replies
3
Views
1K
EnvoyMan
E
corky
Transmission replacement
Replies
6
Views
595
aaserv
aaserv
movietvet
Filters arrived, have to go back under the TB
Replies
23
Views
1K
movietvet
movietvet
movietvet
The fluid purge has started & ended.
Replies
10
Views
770
movietvet
movietvet
gmcman
Alternator compatibility between years
Replies
2
Views
310
gmcman
gmcman
Elizabetty
SOLVED! Ringing whistle? HVAC disruption during servicing? Or?
Replies
36
Views
2K
Mooseman
Mooseman
C
Envoy lurches slightly forward when in Park and starting.
Replies
7
Views
629
Mooseman
Mooseman
movietvet
2002 Trailblazer 2WD/AWD/4HI and 4LO
Replies
3
Views
576
movietvet
movietvet
movietvet
New here and new 2002 TB to me
Replies
12
Views
797
movietvet
movietvet
R
Oil pressure from 0 to 50 until engine warmed 06 Enovy 135k miles
Replies
5
Views
653
Mooseman
Mooseman
S
Rough Idle | No Codes
Replies
3
Views
946
Scry0402
S
l008com
NEED HELP Stick Dipstick!
Replies
38
Views
6K
Mooseman
Mooseman
P
Throttle Position %?
Replies
27
Views
2K
PLAT515
P
l008com
That buttery smooth engine after an oil change never lasts
Replies
9
Views
1K
l008com
l008com
C
Fluid Service interval for Transfer case?
Replies
3
Views
469
c good
C
5tjss
Need Recommendations for Shop to do Engine Swap
Replies
5
Views
565
5tjss
5tjss
Miked
Rough Idle
Replies
5
Views
812
TequilaWarrior
T
B
2004 envoy 4.2 engine lost oil
Replies
2
Views
500
Ben4.2
B
C
Yellow Dip Stick Dilemma
Replies
6
Views
756
c good
C
C
Berryman's Soak number two. Thinking about adding some aeration?
Replies
3
Views
489
gmcman
gmcman
C
Adding ATF to oil....how much and for how many miles?
Replies
3
Views
584
Mooseman
Mooseman
X
NEED HELP AC / Heater Blower working intermittently with dash lights
Replies
9
Views
842
Xodus989
X
JayArr
Gas tank extraction pump recommendations?
Replies
15
Views
1K
Mooseman
Mooseman
C
Would you put in a new Fuel Pump if it's never been replaced at 190 K miles?
Replies
5
Views
682
gmcman
gmcman
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