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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Vortec 4.2L I-6
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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
Locked
Let the fun begin...pulled the head on my 4.2L
midnightbluS10
Feb 18, 2017
2
3
4
Replies
135
Views
20K
Jul 20, 2018
Mooseman
C
SOLVED!
Fuse 28 PCM-1 blows randomly
c good
Mar 15, 2018
2
3
4
Replies
156
Views
20K
Oct 5, 2022
rolo95
NEED HELP
2002 Chevy Trailblazer no crank
BlueDazing
Mar 22, 2023
2
3
4
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158
Views
7K
Oct 27, 2023
TJBaker57
U
Engine no acceleration
Uncleenvoy
Nov 8, 2020
2
3
4
5
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164
Views
11K
Dec 3, 2020
Uncleenvoy
U
U
Power steering line removal and replace
Uncleenvoy
Oct 22, 2020
2
3
4
5
Replies
166
Views
12K
Oct 10, 2021
coolride
Locked
Back to bad MPG heat range causing it?
AzTruckGuy
Jul 11, 2016
2
3
4
5
Replies
183
Views
17K
Dec 20, 2017
Sparky
The $85,000.00 GM 4.2L Engine Repair
mrrsm
Oct 23, 2015
2
3
4
5
Replies
189
Views
50K
Aug 10, 2022
03TrailblazerNut
0
U
Transmission removal inspection repair install
Uncleenvoy
Aug 23, 2020
2
3
4
5
6
Replies
229
Views
12K
Oct 18, 2020
Uncleenvoy
U
D
Cranks but won't start
Dave347
Feb 18, 2014
3
4
5
6
7
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265
Views
38K
Jun 15, 2021
Mooseman
horrible mpg and weird idle drop
Gerbil21
Aug 11, 2014
4
5
6
7
8
Replies
294
Views
24K
Jan 24, 2016
Gerbil21
Only getting 160 miles on 25gal tank
pcharm129
May 8, 2015
8
9
10
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12
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471
Views
33K
Aug 3, 2016
pcharm129
4.2 Envoy Turbo Build
ConeKilrAutoX
Jul 17, 2012
13
14
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16
17
Replies
663
Views
57K
Dec 18, 2013
ConeKilrAutoX
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Engine & Drivetrain
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