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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
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Vortec 4.2L I-6
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FAQ: Vortec 4.2L I-6
Mooseman
May 1, 2017
Replies
1
Views
9K
Nov 13, 2020
Mooseman
Sticky
4.2L (LL8) DTC Engine Diagnostic Parameters
Mooseman
Oct 7, 2019
Replies
3
Views
3K
Oct 7, 2019
TJBaker57
Normal threads
C
Radiator spring clamps
ComputernerdBD
Jul 12, 2018
Replies
12
Views
926
Friday at 11:40 PM
Mooseman
Need advice please on RTV
jmonica
May 18, 2021
Replies
12
Views
701
Friday at 4:20 AM
matermark
B
SOLVED!
P0017 Assistance
Brimmy
Sep 6, 2021
Replies
18
Views
891
Thursday at 5:54 PM
MRRSM
J
P0017 code and Knocking. Need help with next steps.
jasonmesq
Oct 25, 2021
Replies
4
Views
442
Thursday at 4:39 PM
MRRSM
R
Throttle body swap
retiredcopper
Tuesday at 12:56 PM
Replies
10
Views
163
Wednesday at 12:27 PM
Mooseman
J
NEED HELP
02 envoy rep
Jrob21
Jan 17, 2022
Replies
15
Views
203
Tuesday at 10:59 PM
Mooseman
L
NEED HELP
2002 GMC envoy won't start
loopdawg111
Jan 15, 2022
Replies
3
Views
138
Jan 16, 2022
59840Surfer
R
Evap
retiredcopper
Jan 9, 2022
Replies
3
Views
123
Jan 16, 2022
JerryIrons
J
Get to work on my first 4.2!
TollKeeper
Oct 15, 2021
Replies
19
Views
856
Jan 8, 2022
59840Surfer
K
Won't start
kw1hf
Dec 28, 2021
Replies
12
Views
287
Jan 7, 2022
MRRSM
SOLVED!
Crank no start when rains
Ilikemy3s
Jan 2, 2022
Replies
12
Views
369
Jan 7, 2022
Ilikemy3s
0
04 trailblazer lt 4.2 2wd PLEASE HELP P0016
04tblt
Dec 6, 2021
Replies
6
Views
338
Jan 5, 2022
04tblt
0
'06 4.2L-Filthy oil inside air plenum.
stvrob
Jan 19, 2016
Replies
38
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16K
Dec 26, 2021
59840Surfer
D
Service stabilitrak
Dmflash
Dec 25, 2021
Replies
6
Views
200
Dec 26, 2021
Mooseman
G
04 Bravada random misfire keeps coming back
gladesteen
Dec 20, 2021
Replies
38
Views
563
Dec 22, 2021
gladesteen
G
Does anyone know the trigger temperatures for the Fan clutch?
zaid3ssaf
Dec 14, 2021
Replies
15
Views
366
Dec 20, 2021
aaserv
R
Plugs
retiredcopper
Dec 17, 2021
Replies
2
Views
172
Dec 17, 2021
retiredcopper
R
J
No power to one side of fuse 47
Jai_P
Dec 16, 2021
Replies
2
Views
266
Dec 16, 2021
MRRSM
D
Issue With Spark Plugs
dclark369
Dec 11, 2021
Replies
7
Views
313
Dec 11, 2021
TequilaWarrior
T
J
PCM swap trailblazer
Josh2008tb
Nov 30, 2021
Replies
3
Views
356
Dec 11, 2021
rchalmers3
R
D
Missing Bolt for My Radiator Fan
dclark369
Dec 11, 2021
Replies
7
Views
243
Dec 11, 2021
rchalmers3
R
J
Remanufactured Engine or Not? Need Reality Check!
Joseph Fallon
Oct 31, 2021
Replies
19
Views
987
Dec 6, 2021
limequat
Help to identify top end noise
gmcman
Mar 7, 2019
2
3
Replies
117
Views
8K
Dec 5, 2021
MRRSM
C
Tccm easy fix 02 envoy
cobblershelli
Nov 19, 2021
Replies
3
Views
326
Nov 26, 2021
Mektek
M
P
NEED HELP
Shifting problems
pell
Nov 25, 2021
Replies
0
Views
179
Nov 25, 2021
pell
P
C
SOLVED!
Fuse 28 PCM-1 blows randomly
c good
Mar 15, 2018
2
3
4
Replies
155
Views
7K
Nov 23, 2021
c good
C
T
Power steering bubbles
Truckerchaz
Nov 17, 2021
Replies
8
Views
367
Nov 18, 2021
Mooseman
K
Rebuild Fan Clutch
kakacookhe
Nov 13, 2021
Replies
12
Views
391
Nov 14, 2021
budwich
B
Begging for help on finding correct parts PLEASE?
jmonica
Oct 30, 2021
Replies
11
Views
705
Nov 3, 2021
JerryIrons
J
Weird "Engine Knock" Diagnostic Technique
MRRSM
Oct 30, 2021
Replies
0
Views
325
Oct 30, 2021
MRRSM
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