Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.5K
38.8K
Threads
2.5K
Posts
38.8K
movietvet
2002 TB running great

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

392
5.2K
Threads
392
Posts
5.2K
Mike534x
Catalytic converter replacement options EPA vs carb

LS2 6.0L V8

40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
l008com
SOLVED! Bad Wheel Bearings
Replies
59
Views
5K
TollKeeper
TollKeeper
Aec678
NEED HELP Fan Clutch from hell lol
Replies
58
Views
5K
TJBaker57
TJBaker57
M
rpm/voltmeter problem
Replies
57
Views
4K
woody79
woody79
B
cracked exhaust manifold
Replies
56
Views
10K
dfc739
dfc739
HMan_Rainier
P0305, AWD failure, and loss of cruise control
Replies
54
Views
2K
mrrsm
mrrsm
P
The dreaded Transmission Flush
Replies
54
Views
13K
JayArr
JayArr
06TrailblazerLSS
Coolant burning/boiling type smell, everyone once in a while.
Replies
53
Views
15K
C-ya
C-ya
HizAndHerz
NEED HELP Flex plate cracked: do I need to pull transmission?
Replies
51
Views
15K
HizAndHerz
HizAndHerz
movietvet
2002 TB 4.2 died at stop & immediate restart
Replies
51
Views
2K
movietvet
movietvet
2advanced
NEED HELP High Negative LTFT / Poor Gas Mileage
Replies
51
Views
11K
Tankcruiser
Tankcruiser
M
PCMforless Easter Sale!!!!
Replies
50
Views
4K
DMD_TB
DMD_TB
ghost_leader07
NEED HELP Overheating issue with AC ON!
Replies
49
Views
3K
ghost_leader07
ghost_leader07
S
  • Locked
PCMforLess Terrible Experience
Replies
49
Views
5K
Fishhunter911
Fishhunter911
S
Difficulty removing clutch fan
Replies
48
Views
7K
Sprung Monkey
S
loondog33
Getting ready to chase down bad wheel bearing.
Replies
47
Views
3K
loondog33
loondog33
WeaponX
Another fuel injector install aftermath question Yippee!!
Replies
47
Views
4K
WeaponX
WeaponX
A
What exhaust makes the 4.2 sound more like the 6.0
Replies
46
Views
9K
CptFrito
C
A
Time for performance
Replies
45
Views
4K
sevendj
S
N
Is this a transmission issue
Replies
43
Views
3K
IllogicTC
IllogicTC
Malo
Would I feel any difference with a K & N air filter !!!!!!
Replies
43
Views
3K
blazinlow89
blazinlow89
FearlessAZ
Transmission Issues
Replies
43
Views
4K
FearlessAZ
FearlessAZ
U
P00017 P00014
Replies
42
Views
4K
Uncleenvoy
U
C
2006 Trailblazer ticking noise now wont run
Replies
41
Views
6K
Sparky
Sparky
trailboycer72
No G80
Replies
41
Views
3K
HARDTRAILZ
HARDTRAILZ
Voymom
New Serp belt, but still getting noise...
Replies
41
Views
4K
Voymom
Voymom
Charles Austin Miller
NEED HELP TB EXT dropping out of gear, overheating
Replies
40
Views
3K
jsheahawk
jsheahawk
Big west
4.2 i6 to 5.3 ls
Replies
39
Views
6K
Fishnbob
F
l008com
NEED HELP Stick Dipstick!
Replies
38
Views
6K
Mooseman
Mooseman
OctaneRider03
Project "Solace"
Replies
38
Views
2K
OctaneRider03
OctaneRider03
D
cold air intake
Replies
37
Views
3K
Grimor
Grimor
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