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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Repairs, tuning, modifications, & maintenance.
Vortec 4.2L I-6
New
2.5K
38.9K
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2.5K
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38.9K
Horn dose not work
Yesterday at 4:47 PM
Sqrly
Drivetrain
New
1.1K
13.3K
Threads
1.1K
Posts
13.3K
NEED HELP
Tranny slipping and surging. 4WD switch flashing
Apr 4, 2024
filthyfingers
Vortec 5.3L V8
New
393
5.2K
Threads
393
Posts
5.2K
Rate this Used Airfilter
Tuesday at 12:20 PM
christo829
LS2 6.0L V8
40
839
Threads
40
Posts
839
H
Cylinder 6 Misfire Mystery
Nov 20, 2023
highlander
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4wd disconnect axle
mark'stb
Oct 15, 2018
Replies
2
Views
705
Oct 16, 2018
mark'stb
4WD Disconnect Advice
psa55
Aug 7, 2020
Replies
10
Views
3K
Aug 23, 2020
BrianF
B
4WD Disconnect - bad gasket
psa55
Mar 16, 2019
Replies
8
Views
1K
Mar 23, 2019
psa55
NEED HELP
4wd didn't switch to 2wd
Riktar
Jan 26, 2018
Replies
7
Views
2K
Feb 2, 2018
Riktar
4wd clunks hard, does not immediately engage when selected
6716
Jan 30, 2022
Replies
22
Views
2K
Jun 2, 2023
Mooseman
4wd Axle Disconnect...Replace or Repair
BanditGTP
Mar 16, 2020
Replies
27
Views
5K
Sep 8, 2021
chris68369
C
C
4WD acting odd - intermittent service light
cstern71
Jan 6, 2017
Replies
13
Views
2K
Mar 24, 2017
jimbrown87
4L60e.... To flush or not to flush?
zaid3ssaf
Sep 26, 2020
Replies
19
Views
8K
May 24, 2023
zaid3ssaf
C
4L60E transmission without Tow/Haul vs. 4L60E with Tow/Haul?
c good
Jul 19, 2021
Replies
5
Views
4K
Jul 21, 2021
c good
C
4L60E question
Harpo
Jun 11, 2022
Replies
9
Views
1K
Jun 28, 2022
6716
C
Locked
4l60e help please
chris6822
Apr 4, 2021
Replies
8
Views
1K
Apr 12, 2021
Blckshdw
G
4L60E - Changing Gear from D to R with with hard stack/kick
gboos
Sep 17, 2012
Replies
7
Views
2K
Sep 19, 2012
gboos
G
A
4L60E
AppleJack
Dec 9, 2018
Replies
4
Views
928
Dec 9, 2018
littleblazer
G
400hp at the crank on a 4200
gmc4flash
Nov 19, 2019
Replies
11
Views
5K
Nov 24, 2019
cornchip
R
4.2l running hot, reduced power
RedMonte85
Jun 26, 2017
Replies
4
Views
860
Jun 26, 2017
Mooseman
4.2L I6 Head Removal/Engine Restoration
OctaneRider03
Aug 1, 2012
9
10
11
12
13
Replies
490
Views
67K
Jan 28, 2013
OctaneRider03
J
4.2L engine issues
Jumbie65
Aug 2, 2018
Replies
9
Views
1K
Aug 4, 2018
Jumbie65
J
4.2L Dieseling sound
zaid3ssaf
Nov 13, 2020
Replies
20
Views
2K
Apr 19, 2024
Mooseman
Z
4.2 vs 5.3...hear me out.
ZR2Trailblazer
Apr 28, 2012
2
Replies
72
Views
20K
Jun 24, 2012
ZR2Trailblazer
Z
R
4.2 to 5.3 swap in 2WD 2004 TB
Raydar
Mar 11, 2014
Replies
2
Views
2K
Mar 12, 2014
Raydar
R
M
4.2 motor swap
mechanic rich
May 23, 2023
Replies
8
Views
528
Sep 7, 2023
Mooseman
4.2 L oil pressure measurement-cold to hot
zaid3ssaf
Nov 21, 2020
Replies
7
Views
2K
Nov 22, 2020
TJBaker57
C
4.2 keeps losing oil pressure
chuey_316
Feb 4, 2021
2
3
4
Replies
133
Views
13K
Jul 18, 2021
chuey_316
C
4.2 i6 to 5.3 ls
Big west
Jan 30, 2020
Replies
39
Views
6K
May 16, 2023
Fishnbob
F
J
4.2 Head Gasket?
Justin_kyllo
Feb 19, 2014
Replies
33
Views
7K
Mar 28, 2014
0u812
0
SOLVED!
4.2 cam phaser 03 Tb Ext LT
mattpaul89
Jan 13, 2023
Replies
12
Views
1K
Feb 7, 2023
mrrsm
M
4.2 2003 heater hose
medic550
Jul 13, 2015
Replies
0
Views
740
Jul 13, 2015
medic550
M
K
4.2 misfires , no codes...
KEEBZ489
Jan 22, 2019
Replies
21
Views
2K
Mar 25, 2019
KEEBZ489
K
4-Wheel drive not engaging properly?
miron
Jan 23, 2012
Replies
3
Views
1K
Jan 23, 2012
The_Roadie
4 Wheel Drive with mind of its own!?
MedicatedMike
Mar 11, 2012
Replies
16
Views
4K
Dec 28, 2013
Up And Down
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