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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Repairs, tuning, modifications, & maintenance.
Vortec 4.2L I-6
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PO442
Friday at 11:06 PM
Stuntmanmike1977
Drivetrain
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Normal Transmission Temperature?
Yesterday at 12:38 PM
Brian K
Vortec 5.3L V8
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Runs rough couple miles after starting
Friday at 10:43 AM
MD_Envoy_Driver
LS2 6.0L V8
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839
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H
Cylinder 6 Misfire Mystery
Nov 20, 2023
highlander
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Advise please, idle issue and code P0502
ScottS
Feb 1, 2012
Replies
18
Views
4K
Sep 11, 2012
ScottS
Transmission Issues
FearlessAZ
Jun 13, 2016
2
Replies
43
Views
4K
Jun 30, 2016
FearlessAZ
2
how often to change differential fluid?
2001FZ1
Apr 6, 2012
Replies
7
Views
4K
Apr 12, 2012
Black_tb
Replacing or rebuilding front differential
holytornado84
Mar 24, 2017
Replies
11
Views
4K
Jun 5, 2017
holytornado84
Steering wheel position sensor
steveo67
Jan 27, 2013
Replies
6
Views
4K
Jan 28, 2013
jason43080
C
5.3l Denali Purchase
Cshults
Jun 1, 2019
Replies
19
Views
4K
Jun 3, 2019
DocBrown
G
SOLVED!
04 Trailblazer battery light issue
gica
Sep 10, 2018
Replies
5
Views
4K
Apr 9, 2019
Hlewz3
H
S
I may have ruined the oil pump?
Sprung Monkey
Jun 25, 2021
Replies
36
Views
4K
Jul 28, 2021
Sprung Monkey
S
L
NEED HELP
Transmission problems (tcc, shifting)
Leukay
Jul 17, 2017
Replies
18
Views
4K
Sep 27, 2017
seanpooh
C
NEED HELP
Valve spring retainers popped off
chaphar540
Aug 31, 2019
Replies
9
Views
4K
Aug 31, 2019
chaphar540
C
U
4WD not engaging
USA-1
Dec 8, 2013
Replies
10
Views
4K
Dec 14, 2013
USA-1
U
D
P0014 Code
D_Weave22
Mar 29, 2013
Replies
15
Views
4K
May 3, 2013
Mooseman
SOLVED!
starting issue- replaced neutral safety switch
bobo52
Jan 13, 2021
Replies
13
Views
4K
Jan 20, 2021
bobo52
Wheel bearing hub assembly
Dmflash
Mar 8, 2023
2
Replies
68
Views
4K
Nov 28, 2023
far eastan
F
I
Front Axle Seal, how to replace?
Integraoligist
Feb 22, 2012
Replies
8
Views
4K
Feb 24, 2012
Integraoligist
I
02 I6 no start help
danger
Apr 6, 2014
2
Replies
76
Views
4K
Apr 27, 2014
IllogicTC
NEED HELP
P0651
psa55
Jun 7, 2020
Replies
17
Views
4K
Jul 14, 2022
mrrsm
Whine/Squeal consistent with RPM change (Revisited thread see last post)
PProph
Feb 13, 2012
Replies
32
Views
4K
Jun 14, 2016
PProph
H
slight rough idle
htseat2000
Aug 14, 2017
Replies
10
Views
4K
Sep 20, 2017
Mooseman
2005 trailblazer ticking sound
Malo
Mar 1, 2014
Replies
10
Views
4K
Mar 30, 2014
The_Roadie
PCMForLess tune review
Lima Tango
Mar 16, 2012
Replies
7
Views
4K
Apr 25, 2012
03envoy
PCM not checking O2 Sensors after replacing one
CajunWon
Jul 7, 2018
Replies
6
Views
4K
Jul 12, 2018
CajunWon
H
2006 transfer case issue
h-m
Feb 1, 2014
Replies
25
Views
4K
Feb 20, 2014
The_Roadie
NEED HELP
Persistent P2138 And Reduced Engine Power
UsernameIsTaken
Aug 27, 2019
Replies
17
Views
4K
Sep 1, 2019
UsernameIsTaken
Another fuel injector install aftermath question Yippee!!
WeaponX
Aug 14, 2019
2
Replies
47
Views
4K
Sep 1, 2019
WeaponX
T
Engine Code Help
Troubleshooter
Feb 18, 2012
Replies
9
Views
4K
Feb 21, 2012
Chickenhawk
0
Engine Swap Questions
02gtp
Feb 16, 2017
Replies
7
Views
4K
Feb 17, 2017
Mooseman
A
04 Chevy Trailblazer LT Rattle coming from passenger side
albsilk305
Aug 5, 2015
Replies
11
Views
4K
Aug 8, 2015
Mooseman
P
02 Trailblazer 4 wheel drive problem
Paul1958
Jan 27, 2013
Replies
13
Views
4K
Feb 6, 2013
Paul1958
P
E
Best Bluetooth scan tool/apps? (Android)
ElAviator72
Jun 4, 2012
Replies
22
Views
4K
Jun 11, 2012
CaptainXL
C
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