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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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OEM Thermostat Temperature
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Mike534x
Drivetrain
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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
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839
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H
Cylinder 6 Misfire Mystery
Nov 20, 2023
highlander
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leaking tranny fluid
chrisN
Sep 6, 2013
Replies
3
Views
1K
Sep 7, 2013
chrisN
C
Sprint Booster
Pittdawg
Sep 4, 2013
Replies
7
Views
991
Sep 6, 2013
Wooluf1952
D
drive train components
davids_1718
Sep 4, 2013
Replies
2
Views
872
Sep 6, 2013
dfc739
S
Rough idle / Engine Dying and Low Oil Pressure Warning
StormPursuit
Sep 2, 2013
Replies
11
Views
7K
Sep 3, 2013
CaptainXL
C
X
Weird error codes
xj2202009
Sep 27, 2012
Replies
20
Views
2K
Sep 2, 2013
xj2202009
X
J
2003 TB thermostat
JimCshoe
Sep 1, 2013
Replies
5
Views
896
Sep 1, 2013
meerschm
J
Jiffy tite connectors
JimCshoe
Aug 31, 2013
Replies
3
Views
791
Aug 31, 2013
blazinlow89
T
Water Pump - Roaring noise from fan
tbags4ever
Aug 31, 2013
Replies
2
Views
928
Aug 31, 2013
Mooseman
Anyone used automotix.net?
Shdwdrgn
Aug 26, 2013
Replies
8
Views
1K
Aug 31, 2013
Shdwdrgn
please advise, change oil light.
joepro17
Aug 20, 2013
Replies
27
Views
2K
Aug 23, 2013
Mark20
D
where is the Idle air control valve on 04 envoy
dazingla
Aug 22, 2013
Replies
6
Views
8K
Aug 23, 2013
gmcman
C
trailblazer shuts off at a stop...
chevyfan77
Aug 22, 2013
Replies
1
Views
813
Aug 22, 2013
The_Roadie
J
Engine Compatibility
jlahood
Dec 12, 2012
Replies
3
Views
1K
Aug 22, 2013
04GREENZ71
0
Collapsed Radiator Hoses
DJones
Aug 15, 2013
Replies
14
Views
4K
Aug 21, 2013
DJones
Propylene Glycol Engine Coolant with Poly Organic Acid Technology
DJones
Aug 18, 2013
Replies
2
Views
3K
Aug 19, 2013
DJones
SOMETHING Just blew...
DenaliHD66
Jun 24, 2013
2
3
Replies
116
Views
7K
Aug 19, 2013
DenaliHD66
Engine surging while cruising at low speeds.
DenaliHD66
Aug 17, 2013
Replies
6
Views
863
Aug 19, 2013
DenaliHD66
D
Regular or synthetic oil what do you guys think
dazingla
Jul 25, 2013
Replies
30
Views
7K
Aug 15, 2013
HARDTRAILZ
thump sound/ jolt after stopping
jpinoy
Aug 9, 2013
Replies
10
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2K
Aug 12, 2013
jpinoy
S
Code p0495
Southernboy08
Aug 7, 2013
Replies
5
Views
3K
Aug 9, 2013
Mooseman
Engine Braking?
CDJuda
Aug 7, 2013
Replies
19
Views
1K
Aug 9, 2013
AtlWrk
T
Where did GM Hide the 05-on Fuel Pressure regulator on the Trailblazers?
Tmn8tr
Aug 6, 2013
Replies
4
Views
1K
Aug 7, 2013
BRomanJr
B
5.3L O2 Sensors
roadmaven
Aug 5, 2013
Replies
4
Views
980
Aug 6, 2013
RayVoy
Code p0101?
Canary2323
Aug 2, 2013
Replies
6
Views
1K
Aug 4, 2013
djthumper
P
heat shield rattling
pgibbzz
Aug 2, 2013
Replies
0
Views
653
Aug 2, 2013
pgibbzz
P
T
Low Oil Pressure on going issue
Trailbuff
Jul 30, 2013
Replies
10
Views
1K
Aug 2, 2013
gmcman
Amsoil and Mobil1 Oil Analysis
DJones
Jul 29, 2013
Replies
7
Views
2K
Jul 31, 2013
DJones
S
Very odd Transmission issue!
saab97x
Jul 29, 2013
Replies
3
Views
1K
Jul 31, 2013
HARDTRAILZ
C
Fan clutch and coolant temp sensor
Chasen
Dec 27, 2012
Replies
5
Views
1K
Jul 30, 2013
djthumper
Troubleshooting the NVG 226 transfer case.
DenaliHD66
Jul 23, 2013
Replies
2
Views
3K
Jul 23, 2013
DenaliHD66
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