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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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NEED HELP
Wont start after engine swap
dvs.dave.03ltz
May 16, 2018
2
Replies
56
Views
17K
Oct 3, 2018
dvs.dave.03ltz
M
NEED HELP
2004 Trailblazer - initial code p0300
mgbspeedy
Feb 11, 2019
Replies
35
Views
14K
Aug 5, 2020
Yotarolla97
Y
W
NEED HELP
Vortec 4.2L I-6 2006 Trailblazer 2 Wheel Drive Oil Pan Removal
wes112565
Jan 2, 2017
Replies
37
Views
13K
Feb 13, 2017
wes112565
W
NEED HELP
P0300 p1514, engine power reduced, white smoke
yazan
Mar 18, 2019
2
3
Replies
81
Views
12K
May 8, 2019
Mooseman
NEED HELP
Bad knocking
redline customs
Sep 19, 2016
2
Replies
58
Views
12K
Oct 7, 2016
littleblazer
R
NEED HELP
Intake manifold bolts
Raph
Jul 14, 2019
Replies
30
Views
11K
Nov 30, 2020
Dadwagon
G
NEED HELP
Engine Replaced - Won't Start
Gaffer
Jul 20, 2019
2
Replies
40
Views
9K
Mar 7, 2020
Gaffer
G
NEED HELP
P1120: Throttle Position Sensor Out of Range
NoDak Ninja
Mar 22, 2017
Replies
5
Views
9K
Apr 2, 2017
NoDak Ninja
NEED HELP
Engine stalling. No codes
yazan
Jun 24, 2019
2
Replies
53
Views
8K
Jul 12, 2019
Mooseman
NEED HELP
Brake Booster Valve Check
AzTruckGuy
Jun 30, 2016
Replies
13
Views
8K
Jul 4, 2016
therealsethallen
NEED HELP
Engine bogs under throttle
LT1transAM
Apr 1, 2017
Replies
30
Views
8K
Apr 24, 2017
LT1transAM
Z
NEED HELP
05 Trailblazer Fuel Gauge Problem. Bad PCM?
Zmoney
Jun 4, 2021
2
3
Replies
85
Views
7K
Sep 8, 2021
Mramses
M
NEED HELP
4.2 Atlas I-6 oil pan mod?
damifino
Oct 28, 2018
Replies
21
Views
7K
Oct 30, 2018
mrrsm
NEED HELP
P1221 . engine power reduced
yazan
Aug 8, 2019
Replies
9
Views
7K
Aug 13, 2019
Mooseman
G
NEED HELP
P0014 Camshaft Phasing System Malfunction
G8a550
Feb 25, 2016
Replies
8
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7K
Mar 1, 2016
Mooseman
NEED HELP
2002 Chevy Trailblazer no crank
BlueDazing
Mar 22, 2023
2
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4
Replies
158
Views
7K
Oct 27, 2023
TJBaker57
NEED HELP
Best way to lock flywheel for harmonic balancer replacement.
Timber531
Jun 10, 2021
2
Replies
52
Views
7K
Aug 22, 2021
Mooseman
S
NEED HELP
Rough idle after parked on incline
Sp00nix
Feb 6, 2019
Replies
5
Views
7K
Feb 8, 2019
Sp00nix
S
NEED HELP
Trailblazer coolant bubbling, no coolant flow?
JPutnam
Jun 30, 2017
Replies
7
Views
6K
Jul 1, 2017
Mooseman
NEED HELP
ATF leaking at radiator coolant line fitting on 2002 Envoy
Drec
Oct 11, 2019
Replies
13
Views
6K
Oct 15, 2019
Drec
R
NEED HELP
P0171 Lean Code
Reed
Jun 20, 2019
Replies
26
Views
6K
Jun 23, 2020
zaid3ssaf
A
NEED HELP
P0507 After Cleaning Throttle Body
aaronv54
Apr 18, 2019
Replies
6
Views
6K
Apr 20, 2019
Mooseman
T
NEED HELP
"Top End Soak" ... question
TequilaWarrior
Apr 29, 2022
Replies
11
Views
6K
May 3, 2022
TollKeeper
D
NEED HELP
2002 chevy trailblazer 4.2 weird problem
deerslayer1985
Dec 1, 2015
Replies
20
Views
6K
Jan 15, 2016
deerslayer1985
D
S
NEED HELP
Envoy turns off sometimes when stopped
suncountry72
Jun 27, 2016
Replies
20
Views
6K
Jul 28, 2016
Dillyo82
M
NEED HELP
fuel smell—-I changed almost everything
mudpaws672
May 10, 2021
Replies
33
Views
5K
Oct 4, 2021
Chickenhawk
D
NEED HELP
Fuel lines and removing intake manifold
deagle12
Apr 17, 2017
Replies
11
Views
5K
Apr 29, 2017
deagle12
D
D
NEED HELP
P1514 TAC System MAF Performance
darsch
Jan 26, 2017
Replies
17
Views
5K
Feb 23, 2017
darsch
D
NEED HELP
Can p0171 be related to sais
jeffro312
Sep 13, 2016
Replies
37
Views
5K
Oct 17, 2016
Mooseman
NEED HELP
Crank no spark
CDSLIMES
Dec 9, 2018
Replies
6
Views
5K
Dec 9, 2018
mrrsm
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Engine & Drivetrain
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