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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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F
NEED HELP
WTH is going on?
FBlaze Mechanic
Jul 8, 2018
Replies
7
Views
1K
Jul 9, 2018
Mooseman
NEED HELP
Wont start after engine swap
dvs.dave.03ltz
May 16, 2018
2
Replies
56
Views
17K
Oct 3, 2018
dvs.dave.03ltz
D
NEED HELP
Wiring diagram & pinout chart .
D.L.G.
Mar 11, 2022
Replies
2
Views
4K
Mar 12, 2022
mrrsm
O
NEED HELP
Will not go into any gear
Oldschool
May 18, 2020
Replies
8
Views
2K
Jul 11, 2020
Oldschool
O
NEED HELP
Wet Coil Pack on CL#06
ghost_leader07
Dec 31, 2020
Replies
18
Views
4K
Feb 5, 2021
ThatOneWhiteTruck
T
T
NEED HELP
VVT Oiling
tooter1
May 31, 2021
Replies
14
Views
3K
Jun 5, 2021
Mooseman
NEED HELP
VVT disassembly information needed.
cornchip
Mar 23, 2023
Replies
1
Views
419
Mar 24, 2023
mrrsm
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
H
NEED HELP
Vibration
Hearnrobert2828
Dec 11, 2019
Replies
18
Views
2K
Dec 13, 2019
mrrsm
G
NEED HELP
used 4.2l engine replacement
gmc4flash
Mar 14, 2016
Replies
14
Views
3K
Apr 19, 2016
gmc4flash
G
NEED HELP
Trouble removing intake
NoDak Ninja
Mar 19, 2017
Replies
8
Views
1K
Mar 22, 2017
NoDak Ninja
NEED HELP
Transmission shift linkage issues
littleblazer
Jul 28, 2021
Replies
7
Views
2K
Aug 3, 2021
Blckshdw
J
NEED HELP
Transmission and Headlight Issues
jessiewebster
Dec 7, 2015
Replies
3
Views
1K
Dec 8, 2015
AtlWrk
M
NEED HELP
Transfer case issues
matty8412
Sep 5, 2019
Replies
28
Views
3K
Dec 8, 2019
matty8412
M
NEED HELP
Trailblazer coolant bubbling, no coolant flow?
JPutnam
Jun 30, 2017
Replies
7
Views
6K
Jul 1, 2017
Mooseman
J
NEED HELP
TrailBlazer 4.2 crank no start strange
Jakeleg223
Jun 30, 2021
Replies
6
Views
2K
Jul 1, 2021
Mooseman
R
NEED HELP
Trailblazer 2007 Fuel injector
Rubsie
Dec 14, 2020
Replies
3
Views
1K
Dec 14, 2020
Mooseman
G
NEED HELP
TB vibrates when in gear and stopped.
Gmansontos
Jun 6, 2016
Replies
12
Views
1K
Jun 8, 2016
mrrsm
T
NEED HELP
TB dies while driving, code nightmare.
Trailguy2016
Jun 6, 2016
Replies
6
Views
1K
Jun 6, 2016
Mooseman
NEED HELP
Surging or lunging
John Koda
Oct 3, 2021
Replies
3
Views
828
Oct 3, 2021
John Koda
NEED HELP
Stalls/dies and key stuck intermittently
redline customs
Aug 28, 2016
Replies
13
Views
1K
Aug 29, 2016
redline customs
C
NEED HELP
SOLVED!!! : finally finished engine swap, now problem with gear indicator
crazyelvis3577
Dec 11, 2016
Replies
4
Views
3K
Dec 11, 2016
jsheahawk
F
NEED HELP
small gas leak........
flyweed
Oct 26, 2015
Replies
8
Views
1K
Nov 8, 2015
Mooseman
P
NEED HELP
Shifting problems
pell
Nov 25, 2021
Replies
0
Views
713
Nov 25, 2021
pell
P
NEED HELP
Shift solenoid issue?
AzTruckGuy
Aug 22, 2016
Replies
7
Views
1K
Aug 23, 2016
AzTruckGuy
M
NEED HELP
several codes and strange behavior
mister zimm
Jul 29, 2019
Replies
2
Views
763
Jul 30, 2019
mister zimm
M
NEED HELP
Serpetine belt issues
tyler
Feb 16, 2019
Replies
9
Views
2K
Feb 19, 2019
KEEBZ489
K
D
NEED HELP
SAIS pump problem
daisey
Aug 7, 2020
Replies
31
Views
3K
Aug 22, 2020
daisey
D
S
NEED HELP
Rough idle after parked on incline
Sp00nix
Feb 6, 2019
Replies
5
Views
7K
Feb 8, 2019
Sp00nix
S
NEED HELP
Rear vibration
Mike w
May 31, 2016
Replies
19
Views
2K
Jun 5, 2016
Mooseman
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Engine & Drivetrain
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