Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.5K
39.1K
Threads
2.5K
Posts
39.1K
Mike534x
Anyone know Hayden 8027739 fan clutch?

Drivetrain New

1.1K
13.4K
Threads
1.1K
Posts
13.4K
JayArr
2005 Envoy Transmission connector Pinout?

Vortec 5.3L V8

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
U
4WD not engaging
Replies
10
Views
4K
USA-1
U
D
dex cool coolant vs regular coolant!!!!!!!!!!
Replies
10
Views
3K
tblazerdude
tblazerdude
smt 59
Steering Rack Fluids
Replies
2
Views
806
smt 59
smt 59
M
p1345 help
Replies
9
Views
1K
The_Roadie
The_Roadie
trailblazin06
4x4. Different tire sizes
Replies
15
Views
2K
Numbnutz
N
J
Wierd vibration at 60-70 mph
Replies
5
Views
1K
jigubhai2001
J
F
2002 Trailblazer - Random Service 4x4 light
Replies
20
Views
3K
The_Roadie
The_Roadie
J
Fuel Filter?
Replies
4
Views
1K
Wooluf1952
Wooluf1952
F
code P0220
Replies
6
Views
1K
fredhouse
F
J
Help with airflow mode actuator
Replies
3
Views
940
jfkmk
J
E
  • Locked
The Terrible Horrible No-Good Misbehaving Envoy Idle
Replies
8
Views
2K
Envoyable
E
C
Bad/Shorted Coil Pack was blowing fuse #28. It's officially solved.
Replies
1
Views
937
CaptainXL
C
M
Something bad happened - Sunshell?
Replies
33
Views
13K
triz
triz
DenaliHD66
Built 4l60e Replacement?
Replies
37
Views
6K
Sparky
Sparky
B
2004 Trailblazer - Whine when coming to a stop in A4WD and 4HI
Replies
4
Views
1K
RayVoy
RayVoy
C
Please help! Misfire at idle?
Replies
4
Views
1K
hdodd1
H
MileHigh18
Part # for AC Delco MAP sensor 2002 TB LT?
Replies
4
Views
1K
christo829
christo829
MileHigh18
Question regarding cleaning my throttle body
Replies
5
Views
1K
stormsurge
stormsurge
D
Heavy Vibration in Gear
Replies
6
Views
1K
dmunchak
D
M
help me identify this piece!!!
Replies
15
Views
2K
bruhaba
B
A
02 envoy shutting off help!!
Replies
9
Views
1K
Abkc
A
F
2002 Olds Bravada - Thinking of buying have a few questions
Replies
6
Views
1K
fixnux
F
H
Front Driveshaft Removal to bypass A4wd
Replies
14
Views
10K
hullman8
H
M
How hot is too hot?
Replies
8
Views
964
MichEnvoyGuy
M
J
2002 TB running problems
Replies
8
Views
964
gmcman
gmcman
Jtyler77
Can't figure out these noises?
Replies
6
Views
1K
Jtyler77
Jtyler77
H
high pitched noise in low gear on 03 envoy
Replies
2
Views
968
hommer
H
DenaliHD66
Won't start again after being run
Replies
5
Views
870
gmcman
gmcman
B
Sudden Overheating with New Water Pump
Replies
73
Views
5K
kkoether
kkoether
gmcman
Vette servo installed
Replies
7
Views
2K
gmcman
gmcman
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