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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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B
Power Steering hard right turn
B33p3r
Jun 20, 2014
Replies
19
Views
11K
Jul 19, 2014
The_Roadie
G
03 trailblazer wont go above 10 mph
grizzly4x4
Jul 23, 2013
Replies
16
Views
11K
Sep 22, 2013
LordBear
W
Grinding Noise - Only Some Times - While Moving Foward at Speed (40mph?) 2004 TB LT 4WD
webdawg
Apr 27, 2015
2
Replies
46
Views
11K
Aug 14, 2016
Mooseman
Coolant temp sensor doesn't screw all the way in
Chickenhawk
May 23, 2017
Replies
8
Views
11K
May 25, 2017
Chickenhawk
W
A used PCM in a 2004 Trailblazer?
wallus
May 2, 2014
Replies
8
Views
11K
May 6, 2014
wallus
W
N
E-Fan Conversion
novajoe
Sep 11, 2013
Replies
38
Views
11K
Mar 21, 2016
Blckshdw
3 communication errors U1000, U1021, & U1045
Hatchet
Nov 12, 2013
2
Replies
59
Views
11K
Apr 23, 2014
Hatchet
rough idle/low oil pressure
GCTB1289
Nov 9, 2012
Replies
10
Views
11K
Nov 11, 2012
CaptainXL
C
D
Air box mod
David Powe
Nov 5, 2015
Replies
19
Views
11K
Jan 19, 2024
Blckshdw
U
Engine no acceleration
Uncleenvoy
Nov 8, 2020
2
3
4
5
Replies
164
Views
11K
Dec 3, 2020
Uncleenvoy
U
N
Catalytic Converter delete
Nizar
Sep 12, 2013
Replies
9
Views
10K
Sep 13, 2013
Nizar
N
C
No EGR on some 4.2L?
Catriderf7
Oct 3, 2014
Replies
5
Views
10K
Oct 3, 2014
Mounce
SOLVED!
Low oil pressure 4.2L
Nvarela64
Aug 23, 2022
2
Replies
54
Views
10K
Jan 25, 2024
Mooseman
J
Rough idle with AC on and in gear
jimmackey11
Jul 27, 2013
Replies
22
Views
10K
Nov 3, 2013
xtitan1
X
Removing my PCM4Less efan.
Ace1875
Jun 18, 2012
2
Replies
46
Views
10K
Jan 22, 2013
Mypetropig
M
S
fuel pressure regulator
steve-in-ga
May 21, 2014
Replies
9
Views
10K
Jan 17, 2021
Isshman Garcia
G
Lack of acceleration / hesitation
greentahoe
Jul 9, 2014
Replies
5
Views
10K
Feb 12, 2023
Mooseman
SOLVED!
reoccuring low power / limp mode
Ilikemy3s
Oct 11, 2021
Replies
19
Views
10K
Jan 24, 2023
Mooseman
Vibration at Idle after Motor Mount swap
Mathoran
May 13, 2014
Replies
16
Views
10K
Jun 13, 2014
Sparky
Removing engine and transmission together
W4UWC
Jan 8, 2020
2
Replies
43
Views
10K
Apr 2, 2020
W4UWC
P
2007 Trailblazer LS engine noise (sounds like rattling then it makes a clang)!
phogstenjr
Jun 5, 2018
Replies
17
Views
10K
Jun 7, 2018
16vcabman
1
Engine fan wobble
NT1078
Jan 16, 2017
Replies
21
Views
10K
Jan 31, 2017
Lee
G
04 TB temperature needle drifts to the right when going up a hill
gica
Jul 26, 2019
2
3
4
Replies
125
Views
10K
May 24, 2021
Mooseman
V
p0300 and p0014
verles
Feb 26, 2014
Replies
26
Views
10K
Mar 19, 2014
JCJARHEAD
J
Question
Opinions Wanted: Bypass OEM Transmission Cooler?
Blckshdw
Aug 27, 2019
2
Replies
54
Views
10K
Sep 7, 2019
littleblazer
J
Totally stumped on stumble - any gm master techs out there?
jbwi112
Aug 19, 2015
2
Replies
52
Views
10K
Sep 6, 2015
gmcman
Engine Stumble at idle.
Alec Venable
Nov 9, 2016
Replies
38
Views
10K
Mar 16, 2017
Realism
G
Torque Converter? Transmission issues as well? 2005 Trailblazer
Geoffhastings
May 5, 2015
Replies
21
Views
9K
May 30, 2015
Geoffhastings
G
V
P0410 Code
v7guy
Dec 5, 2011
Replies
12
Views
9K
Dec 12, 2020
mrrsm
T
SOLVED!
4.2L LL8 Harmonic Balancer Removal/Installation
TopQuark
Sep 17, 2019
Replies
18
Views
9K
Sep 12, 2023
KWG2005
K
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Engine & Drivetrain
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