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Forums
TrailBlazer, Envoy, 9-7x, Ascender, Rainer, & Bravada
Engine & Drivetrain
Repairs, tuning, modifications, & maintenance.
Vortec 4.2L I-6
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2002 TB running great
Yesterday at 11:29 AM
movietvet
Drivetrain
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13.3K
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13.3K
NEED HELP
Tranny slipping and surging. 4WD switch flashing
Apr 4, 2024
filthyfingers
Vortec 5.3L V8
392
5.2K
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392
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5.2K
Catalytic converter replacement options EPA vs carb
Feb 18, 2024
Mike534x
LS2 6.0L V8
40
839
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40
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839
H
Cylinder 6 Misfire Mystery
Nov 20, 2023
highlander
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Has anyone purchased the GForce Performance Chip? Does it improve mpg?
Lacher
Nov 3, 2012
Replies
13
Views
3K
Dec 23, 2012
Mark20
Clarification on Front & Rear Differential Lubes
DgTerrell
May 29, 2012
Replies
17
Views
10K
Dec 22, 2012
Fire06
F
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
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
2
Possible Tranny Problems?
2004tb
Oct 9, 2012
Replies
3
Views
1K
Dec 7, 2012
johnnytutos
Dual Batteries UnderHood - I6
HARDTRAILZ
May 1, 2012
Replies
19
Views
2K
Dec 6, 2012
blazinlow89
S
Vibration from front end when coasting
shortman1166
Dec 4, 2012
Replies
2
Views
1K
Dec 4, 2012
shortman1166
S
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
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
T
CV axle problem
tim mc
Nov 23, 2012
Replies
2
Views
962
Nov 23, 2012
tim mc
T
Power steering bleed question
'03EXT
Nov 17, 2012
Replies
7
Views
1K
Nov 19, 2012
'03EXT
F
Turbo Or Supercharger?
familywagon12
Nov 17, 2012
Replies
21
Views
2K
Nov 18, 2012
Jkust
J
T
2002 Chevy Trailblazer
Tish
Nov 17, 2012
Replies
5
Views
1K
Nov 17, 2012
The_Roadie
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
D
Before I order how does this sound?
dvdman
Nov 14, 2012
Replies
3
Views
927
Nov 14, 2012
ScarabEpic22
S
Code P0455 and strong smell after fill up
Stryder
Nov 12, 2012
Replies
5
Views
4K
Nov 13, 2012
meerschm
K
Throttle Body cleaning and Seafoaming
kjkim93
Nov 2, 2012
Replies
0
Views
955
Nov 2, 2012
kjkim93
K
Easiest Rear Differential to Install = ???
DenaliHD66
Nov 1, 2012
Replies
5
Views
1K
Nov 1, 2012
DenaliHD66
Shimmy Shake at 75mph
CRAZYDAVE
Jul 23, 2012
Replies
10
Views
2K
Oct 26, 2012
camper1
Z
New Battery
zapo1
Oct 26, 2012
Replies
4
Views
944
Oct 26, 2012
C-ya
o2 sensors..engine shaky
dla442
Oct 20, 2012
Replies
10
Views
1K
Oct 23, 2012
dla442
C
P0306 - p0014
chagob
Oct 6, 2012
Replies
3
Views
1K
Oct 21, 2012
chagob
C
F
How much play in crankshaft and rod bearings is too much?
fferd
Oct 19, 2012
Replies
2
Views
9K
Oct 20, 2012
fferd
F
Give it gas while in Park / Neutral then almost comes to a complete stop
fadyasha
Oct 16, 2012
Replies
3
Views
987
Oct 16, 2012
HARDTRAILZ
S
Reliability concerns
splashback
Oct 15, 2012
Replies
2
Views
802
Oct 15, 2012
The_Roadie
W
Reduced Engine Power Light-Help
WebRoad Runner
Oct 14, 2012
Replies
2
Views
1K
Oct 15, 2012
Wooluf1952
Trans Flush
Wooluf1952
Oct 10, 2012
Replies
20
Views
2K
Oct 15, 2012
Wooluf1952
G
P0756/p0758
gmtrailblazer
Oct 12, 2012
Replies
1
Views
2K
Oct 12, 2012
CaptainXL
C
C
tb idling at 1000rpm
cmatb08
Oct 11, 2012
Replies
8
Views
1K
Oct 12, 2012
CaptainXL
C
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