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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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K
Won't start
kw1hf
Dec 28, 2021
Replies
12
Views
2K
Jan 7, 2022
mrrsm
Service stabilitrak
Dmflash
Dec 25, 2021
Replies
6
Views
1K
Dec 26, 2021
Mooseman
G
04 Bravada random misfire keeps coming back
gladesteen
Dec 20, 2021
Replies
38
Views
3K
Dec 22, 2021
gladesteen
G
R
Plugs
retiredcopper
Dec 17, 2021
Replies
2
Views
718
Dec 17, 2021
retiredcopper
R
J
No power to one side of fuse 47
Jai_P
Dec 16, 2021
Replies
2
Views
967
Dec 16, 2021
mrrsm
Does anyone know the trigger temperatures for the Fan clutch?
zaid3ssaf
Dec 14, 2021
Replies
15
Views
1K
Dec 20, 2021
aaserv
D
Missing Bolt for My Radiator Fan
dclark369
Dec 11, 2021
Replies
7
Views
2K
Dec 11, 2021
rchalmers3
R
D
Issue With Spark Plugs
dclark369
Dec 11, 2021
Replies
7
Views
1K
Dec 11, 2021
TequilaWarrior
T
0
04 trailblazer lt 4.2 2wd PLEASE HELP P0016
04tblt
Dec 6, 2021
Replies
6
Views
4K
Jan 5, 2022
04tblt
0
J
PCM swap trailblazer
Josh2008tb
Nov 30, 2021
Replies
3
Views
2K
Dec 11, 2021
rchalmers3
R
P
NEED HELP
Shifting problems
pell
Nov 25, 2021
Replies
0
Views
713
Nov 25, 2021
pell
P
C
Tccm easy fix 02 envoy
cobblershelli
Nov 19, 2021
Replies
3
Views
959
Nov 26, 2021
Mektek
M
T
Power steering bubbles
Truckerchaz
Nov 17, 2021
Replies
8
Views
1K
Nov 18, 2021
Mooseman
K
Rebuild Fan Clutch
kakacookhe
Nov 13, 2021
Replies
12
Views
2K
Nov 14, 2021
budwich
B
J
Remanufactured Engine or Not? Need Reality Check!
Joseph Fallon
Oct 31, 2021
Replies
19
Views
3K
Dec 6, 2021
limequat
Begging for help on finding correct parts PLEASE?
jmonica
Oct 30, 2021
Replies
11
Views
1K
Nov 3, 2021
JerryIrons
J
Weird "Engine Knock" Diagnostic Technique
mrrsm
Oct 30, 2021
Replies
0
Views
738
Oct 30, 2021
mrrsm
J
P0017 code and Knocking. Need help with next steps.
jasonmesq
Oct 25, 2021
Replies
4
Views
3K
Jan 20, 2022
mrrsm
Get to work on my first 4.2!
TollKeeper
Oct 15, 2021
Replies
19
Views
2K
Jan 8, 2022
59840Surfer
F
Dreaded Knocking Noise 2008 GMC Envoy 4.2L I6 220k miles
Furious92
Oct 14, 2021
Replies
20
Views
8K
Oct 25, 2021
Furious92
F
2
P0412, P0365, P0366 Cranks But Won't Fire
2006TB42Nightmare
Oct 13, 2021
Replies
21
Views
3K
Oct 23, 2021
rchalmers3
R
SOLVED!
reoccuring low power / limp mode
Ilikemy3s
Oct 11, 2021
Replies
19
Views
10K
Jan 24, 2023
Mooseman
M
2002 envoy random misfire
mrbigron2u
Oct 9, 2021
Replies
6
Views
2K
Oct 25, 2021
rchalmers3
R
NEED HELP
Surging or lunging
John Koda
Oct 3, 2021
Replies
3
Views
828
Oct 3, 2021
John Koda
J
Exhaust
Jbulldawg86
Sep 12, 2021
Replies
2
Views
1K
Sep 13, 2021
Jbulldawg86
J
R
Crank no start
Rick
Sep 11, 2021
Replies
5
Views
1K
Sep 11, 2021
Rick
R
AC Compressor bypass
Trekie47
Sep 10, 2021
Replies
3
Views
2K
Sep 10, 2021
Trekie47
M
blower won't turn off
Msb7800
Sep 8, 2021
Replies
2
Views
855
Sep 8, 2021
Mooseman
B
SOLVED!
P0017 Assistance
Brimmy
Sep 6, 2021
Replies
18
Views
7K
Jan 20, 2022
mrrsm
M
SOLVED!
P0013 engine turn off
Mramses
Sep 2, 2021
Replies
1
Views
1K
Sep 3, 2021
Mooseman
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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
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