Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.6K
39.6K
Threads
2.6K
Posts
39.6K
Mooseman
NEED HELP Weird top end knock

Drivetrain New

1.1K
13.6K
Threads
1.1K
Posts
13.6K
Mooseman
Torque converter help

Vortec 5.3L V8 New

404
5.3K
Threads
404
Posts
5.3K
S
CARB approved DOD/AFM delete kit

LS2 6.0L V8

40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
S
Bad starter?
Replies
13
Views
319
flyboy2610
flyboy2610
C
When does piston slap become a problem?
Replies
8
Views
508
c good
C
P
ELM327 to Hexidecimal
Replies
6
Views
336
Mooseman
Mooseman
C
O2 sensor replacement
Replies
8
Views
2K
Mooseman
Mooseman
ghost_leader07
NEED HELP P0171 on my 04 Trailblazer LT won't go away
Replies
118
Views
12K
mrrsm
mrrsm
K
NEED HELP 5.3 vortec long crank
Replies
47
Views
3K
oldfoggie
O
Sqrly
Does it have to learn to idle?
Replies
223
Views
10K
TJBaker57
TJBaker57
Sqrly
Another A4WD question - (hard engagment)
Replies
4
Views
195
Mooseman
Mooseman
C
17.7 mpg....about right?
Replies
3
Views
322
Mooseman
Mooseman
F
P1681 TPS error code
Replies
9
Views
10K
Mooseman
Mooseman
K
99 4l60e jerking only in lockup
Replies
2
Views
276
Mathoran
Mathoran
T
Transmission sensor?
Replies
5
Views
344
budwich
B
T
Thudding noise in rearend Envoy
Replies
2
Views
260
Mooseman
Mooseman
C
Intake manifold blank port/ nipple. What is it for?
Replies
4
Views
436
azswiss
azswiss
C
Worth keeping a spare exhaust manifold?
Replies
5
Views
373
Mooseman
Mooseman
Ilikemy3s
Bound to happen sooner or later
Replies
12
Views
1K
Redbeard
R
C-ya
How to remove the rear gas tank strap
Replies
10
Views
5K
Mooseman
Mooseman
C
Motor Mounts. If they're not leaking, any reason to replace them?
Replies
2
Views
446
mrrsm
mrrsm
C
I have a 2002 Envoy. Replacement Engine options are 02-05 correct?
Replies
1
Views
265
Mooseman
Mooseman
C
How often do you change AC Delco 41-103 plugs?
Replies
2
Views
557
Mooseman
Mooseman
C
Is the Dorman electronic fan clutch decent?
Replies
1
Views
253
Mooseman
Mooseman
C
Do all of our 4.2 I-6 rides have the hole through the oil pan?
Replies
2
Views
446
Mooseman
Mooseman
C
Coolant Gurgle coming from recovery bottle.
Replies
7
Views
691
c good
C
ZD3SF
4.2L Dieseling sound
Replies
26
Views
4K
Realism
Realism
gmcman
What does this noise sound like?
Replies
13
Views
1K
Realism
Realism
C
LL8 Rebuild. Any upgrades recommended?
Replies
3
Views
445
TJBaker57
TJBaker57
TJBaker57
Scantool reports Auto while switch says 4Hi
Replies
11
Views
650
TJBaker57
TJBaker57
Sqrly
Does your Envoy "Decelerate"? (auto trans)
Replies
7
Views
677
Sqrly
Sqrly
S
Frustrating tank drop
Replies
9
Views
827
Stuntmanmike1977
S
R
NEED HELP 2008 GMC Envoy issue with stalling
Replies
9
Views
642
mrrsm
mrrsm
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