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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
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1.1K
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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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S
engine peaks around 4000 rpm. vibration at idle
stantheman
Dec 26, 2012
Replies
6
Views
1K
Dec 27, 2012
blwn31
B
P
Engine sounds like a diesel during cold morning starts
phillypoet313
Dec 26, 2012
Replies
3
Views
1K
Dec 26, 2012
phillypoet313
P
J
High pitch ATF grinding sound when cold shifting from 2nd to 3rd gear
jemmie
Dec 25, 2012
Replies
12
Views
1K
Jan 16, 2013
Bartonmd
L
Gas smell ONLY in cold weather.. 2002 Envoy 4.2
leinhit
Dec 23, 2012
Replies
7
Views
5K
Dec 28, 2015
Wooluf1952
S
how do I change the Differential drivers side bearings out?
shortman1166
Dec 18, 2012
Replies
6
Views
1K
Dec 26, 2012
The_Roadie
J
Where is neutral?
jaguarjoe
Dec 16, 2012
Replies
10
Views
2K
Jul 8, 2013
Irishboy02
J
Engine Compatibility
jlahood
Dec 12, 2012
Replies
3
Views
1K
Aug 22, 2013
04GREENZ71
0
0
Strange problem with my tb. Put on you thinking caps fellas!!!
05_ext
Dec 11, 2012
Replies
8
Views
1K
Dec 12, 2012
05_ext
0
C
Have to change my battery...dont wanna f*** my car up. HELP needed quick
CReynoldsMIZ
Dec 11, 2012
Replies
35
Views
3K
Dec 13, 2012
The_Roadie
S
Vibration from front end when coasting
shortman1166
Dec 4, 2012
Replies
2
Views
1K
Dec 4, 2012
shortman1166
S
How often do you change synthetic oil?
cchuffman
Dec 2, 2012
Replies
17
Views
3K
Dec 3, 2012
TangoBravo
No heat in front, lots in back
PCPBrad
Nov 29, 2012
Replies
5
Views
1K
Nov 29, 2012
PCPBrad
F
Rear End Fill plug
fredhouse
Nov 28, 2012
Replies
9
Views
2K
Jan 23, 2013
Wooluf1952
T
CV axle problem
tim mc
Nov 23, 2012
Replies
2
Views
966
Nov 23, 2012
tim mc
T
Power steering bleed question
'03EXT
Nov 17, 2012
Replies
7
Views
1K
Nov 19, 2012
'03EXT
T
2002 Chevy Trailblazer
Tish
Nov 17, 2012
Replies
5
Views
1K
Nov 17, 2012
The_Roadie
F
Turbo Or Supercharger?
familywagon12
Nov 17, 2012
Replies
21
Views
2K
Nov 18, 2012
Jkust
J
D
Before I order how does this sound?
dvdman
Nov 14, 2012
Replies
3
Views
929
Nov 14, 2012
ScarabEpic22
Does anyone have a spare PCM I can borrow until I get mine tuned? :D
Trail_This
Nov 12, 2012
Replies
15
Views
1K
Nov 16, 2012
Trail_This
S
Code P0455 and strong smell after fill up
Stryder
Nov 12, 2012
Replies
5
Views
4K
Nov 13, 2012
meerschm
Fuel gauge problems. Cluster or sending unit ???
bmartinezx3
Nov 10, 2012
Replies
27
Views
4K
May 18, 2014
BlazingTrails
S
Code p0756 loss of power in first I changed shift solenoids no change. need advise.
sniderjr1
Nov 9, 2012
Replies
16
Views
33K
Feb 1, 2019
Reprise
L
Has anyone purchased the GForce Performance Chip? Does it improve mpg?
Lacher
Nov 3, 2012
Replies
13
Views
3K
Dec 23, 2012
Mark20
K
Throttle Body cleaning and Seafoaming
kjkim93
Nov 2, 2012
Replies
0
Views
957
Nov 2, 2012
kjkim93
K
Why change synthetic oil every 3,000 miles?
C-ya
Nov 1, 2012
2
Replies
64
Views
6K
Feb 14, 2013
Sparky
Easiest Rear Differential to Install = ???
DenaliHD66
Nov 1, 2012
Replies
5
Views
1K
Nov 1, 2012
DenaliHD66
J
Thinking of DIY'ing an Efan kit, am I missing anything?
JimHTP
Oct 31, 2012
Replies
3
Views
1K
Dec 3, 2012
JimHTP
J
S
Intermittant 900 rpm Idle, P0171 Code & Reduced Fuel Mileage
scarecro
Oct 30, 2012
Replies
7
Views
5K
Feb 22, 2014
IllogicTC
Z
New Battery
zapo1
Oct 26, 2012
Replies
4
Views
945
Oct 26, 2012
C-ya
o2 sensors..engine shaky
dla442
Oct 20, 2012
Replies
10
Views
1K
Oct 23, 2012
dla442
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