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TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Repairs, tuning, modifications, & maintenance.
Vortec 4.2L I-6
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PO442
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Stuntmanmike1977
Drivetrain
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2005 Envoy Transmission connector Pinout?
Today at 12:01 PM
JayArr
Vortec 5.3L V8
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5.2K
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394
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Runs rough couple miles after starting
May 10, 2024
04envoyxlv8
LS2 6.0L V8
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839
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839
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Cylinder 6 Misfire Mystery
Nov 20, 2023
highlander
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Stabilitrak button does nothing
Grimor
Apr 12, 2013
Replies
12
Views
2K
Apr 13, 2013
Jkust
J
0
Engine vibration after water pump & belt replacement
05Rainier
Apr 7, 2013
Replies
1
Views
1K
Apr 7, 2013
CaptainXL
C
Mix dex cool with green antifreeze?
Canary2323
Apr 5, 2013
Replies
19
Views
41K
Apr 7, 2013
gmcman
T
Check Engine Light Confusion
TNEnvoyXL
Mar 8, 2013
Replies
27
Views
2K
Apr 6, 2013
TNEnvoyXL
T
HPTuners trying to reset fuel trims
Shdwdrgn
Apr 5, 2013
Replies
8
Views
5K
Apr 5, 2013
Shdwdrgn
H
Fuel filter that won't fit a 2002!!
hashadenough
Apr 5, 2013
Replies
2
Views
1K
Apr 5, 2013
hashadenough
H
Tranny Cooler placement anything to do with Transmission failure.
shrek77
Mar 30, 2013
Replies
10
Views
2K
Apr 1, 2013
shrek77
Anyone fill up with non-ethanol gas?
DenaliHD66
Mar 30, 2013
Replies
10
Views
1K
Apr 1, 2013
Jkust
J
Post your cruising speed numbers:
DenaliHD66
Mar 29, 2013
Replies
8
Views
931
Mar 30, 2013
Shdwdrgn
Section for discussion of custom tunes?
Shdwdrgn
Mar 25, 2013
Replies
10
Views
1K
Mar 29, 2013
Shdwdrgn
Ls1 engine swap
CDJuda
Dec 31, 2012
Replies
16
Views
3K
Mar 28, 2013
ScarabEpic22
C
Strange Experience Today
CaptainXL
Mar 5, 2013
Replies
3
Views
975
Mar 28, 2013
gmcman
below regulated operating temp
MikesTB
Mar 26, 2013
Replies
3
Views
792
Mar 26, 2013
v7guy
V
B
Engine rattle with video
Backwoods16
Mar 4, 2013
Replies
10
Views
1K
Mar 21, 2013
DenaliHD66
Where to purchase fan clutch
gmcman
Feb 28, 2013
Replies
28
Views
2K
Mar 21, 2013
DFWWIZ
C
Engine parts interchangeable with 2006 4.2
CASHKJ
Mar 19, 2013
Replies
1
Views
1K
Mar 19, 2013
jrSS
C
Question on engine rebuild 4.2 2006 trailblazer
CASHKJ
Mar 14, 2013
Replies
4
Views
2K
Mar 19, 2013
CASHKJ
C
B
Thumping while turning and braking
bdorsch44
Mar 18, 2013
Replies
3
Views
934
Mar 19, 2013
CaptainXL
C
S
only getting about 4 qts of oil out on change?
sunliner
Mar 13, 2013
Replies
3
Views
925
Mar 14, 2013
Matt
T
2002 v 2007 Envoy. Had them both and noticed some differences
tom1999d
Sep 10, 2012
Replies
13
Views
2K
Mar 10, 2013
gmcman
C
2006 trailblazer removing engine-getting to transmission housing bolts?
CASHKJ
Feb 28, 2013
Replies
8
Views
30K
Mar 3, 2013
dfc739
S
Differential fill plug
shortman1166
Feb 12, 2013
Replies
3
Views
1K
Mar 1, 2013
seanpooh
Heavy clunk from the rear or transfer case
KaRo
Feb 20, 2013
Replies
6
Views
2K
Feb 23, 2013
KaRo
N
Rough Idle...
n847
Feb 2, 2013
Replies
9
Views
2K
Feb 23, 2013
johnnytutos
J
3.73 to 3.42
johnnieflash
Feb 20, 2013
Replies
17
Views
4K
Feb 22, 2013
Shdwdrgn
Belt tensioner 4.2 I6 question
05EnvoyXL
Feb 14, 2013
Replies
5
Views
1K
Feb 20, 2013
CaptainXL
C
I
Engine flush or not
irecknso
Feb 20, 2013
Replies
2
Views
1K
Feb 20, 2013
CaptainXL
C
C
Back and fourth play in crankshaft 2006 trailblazer 4.2
CASHKJ
Feb 20, 2013
Replies
4
Views
2K
Feb 20, 2013
CaptainXL
C
G
Newbe fuel leak issue
GonzoTB
Jan 16, 2012
Replies
7
Views
2K
Feb 15, 2013
BRomanJr
B
Why change synthetic oil every 3,000 miles?
C-ya
Nov 1, 2012
2
Replies
64
Views
6K
Feb 14, 2013
Sparky
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