Engine & Drivetrain

Repairs, tuning, modifications, & maintenance.

Vortec 4.2L I-6 New

2.5K
39K
Threads
2.5K
Posts
39K
TJBaker57
PO442

Drivetrain New

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

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
800
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
938
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
933
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
960
MichEnvoyGuy
M
J
2002 TB running problems
Replies
8
Views
962
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
966
hommer
H
DenaliHD66
Won't start again after being run
Replies
5
Views
868
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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