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2002 - 2009 TrailBlazer/Envoy Tech
02-09 Vortec 4.2L I-6 Engine and Drivetrain
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OEM Issues
Original Equipment Repairs and/or Problems
68.3K
39.2M
20 h ago
68.3K
39.2M
20 h ago
Air Induction
Performance Air Intake/Air Induction Modifications
11.6K
4.1M
6 d ago
11.6K
4.1M
6 d ago
Exhaust Mods
Performance Exhaust Modifications
12K
3.9M
2 mo ago
12K
3.9M
2 mo ago
Engine Tunes/Mods
Performance Engine Tuning/Engine Modifications
21.2K
9M
15 d ago
21.2K
9M
15 d ago
Transmission Mods
Performance Transmission Modifications
8.3K
4.7M
10 d ago
8.3K
4.7M
10 d ago
4x4 Drivetrain
4x4 Repairs & Problems
15.4K
8.4M
9 d ago
15.4K
8.4M
9 d ago
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= = = New threads may not be posted in this catagory, please select a sub-forum = = =
Jman423
Mar 5, 2008
Locked
0
19K
Mar 5, 2008
by
Jman423
05 4.2 engine
meho1011
1 mo ago
5
228
3 h ago
by
meho1011
P
Help diagnosing engine noise (muffled knocking) [SOLVED] and crankshaft pulley bolt wobble?
Parker H
5 d ago
5
156
1 d ago
by
wcosh
Dead engine SWAP?
Jclaude1212
2 d ago
0
57
2 d ago
by
Jclaude1212
2002 trailblazer ls spark plugs
2002 TB LS
15 d ago
14
434
2 d ago
by
Charrules
A
Rear washer bypass test
autojoe
13 d ago
4
154
2 d ago
by
autojoe
T
ShutOff issues.
TBlazerD
7 d ago
3
174
5 d ago
by
TBlazerD
Timing Chain Noise, or ?
Morgstevenson
7 d ago
0
103
7 d ago
by
Morgstevenson
Removing Head
Trailblazin
Jan 11, 2006
8
8K
8 d ago
by
djdevon
J
2007 trailblazer stuck in park
joemay
10 d ago
4
129
9 d ago
by
TJBaker
2003 trailblazer wont rev past 2000 rpm in park or neutral. Not normal???
blueblazer5_3
17 d ago
7
346
10 d ago
by
sw904
T
Disconnected wire, red, small gauge with lug terminal
Tjsolimeo
10 d ago
1
104
10 d ago
by
flyboy2610
B
2005 4.2l engine swap into a 2006 model issues!!
Bobby S.
10 d ago
0
99
10 d ago
by
Bobby S.
Cooling system suspects
morp
11 d ago
1
103
11 d ago
by
EnvoyBoy2004
Another Low Oil Pressure Saga/Questions
Steve1963
20 d ago
14
525
16 d ago
by
Blue Roads
K
Electric cooling fan
Kylep
7 mo ago
1
238
21 d ago
by
En-Trail
CV Axle replacement turned into a nightmare. Need help!
x1Gambler1x
24 d ago
1
205
23 d ago
by
x1Gambler1x
Is there a kill switch in 03 trailblazer that if ur in a wreck. U have to push to get fuel running again like in a mustang it's in the trunk
Nitedreamer
25 d ago
2
160
24 d ago
by
Diamond193
S
2003 trailblazer.
Sophiaallouise
28 d ago
7
410
24 d ago
by
chem_man
D
03 trailblazer ls sluggish acceleration and other woes
dr pepper
4 mo ago
2
3
47
1K
25 d ago
by
Thomas wind
Bolt size can anyone identify the bolt?
Jlogo1985
1 mo ago
1
156
1 mo ago
by
chem_man
04 Chevy trailblazer vortec v8 engin
Zmadd42013
1 mo ago
3
118
1 mo ago
by
chem_man
No oil pressure
Whitey75
1 mo ago
0
91
1 mo ago
by
Whitey75
0
05 Ascender, Worth fixing?
05Ascender
4 mo ago
3
153
1 mo ago
by
2005AscenderXUV
S
fan clutch nut
scott414
1 mo ago
0
115
1 mo ago
by
scott414
B
Oil pressure gauge dropping at idle
Blue Roads
4 mo ago
2
32
1K
1 mo ago
by
pdcomm
Rough idle
Mavrick 4920
2 mo ago
5
298
1 mo ago
by
2005AscenderXUV
R
Will a 2006 envoy rear axle fit in a 2007 envoy?
Rob800ho
1 mo ago
1
114
1 mo ago
by
Ravalli Surfer
Having a weird noise when starting
Liam98
2 mo ago
5
263
1 mo ago
by
Fastlane
L
torque Converter Shudder
lab2370
2 mo ago
2
3
41
984
2 mo ago
by
Ravalli Surfer
Cv axle
Slay1555
2 mo ago
2
254
2 mo ago
by
Slay1555
K
Very strange tranny issue
Koda
2 mo ago
1
151
2 mo ago
by
lab2370
R
Best Spark Plugs
Ricoooo
2 mo ago
3
358
2 mo ago
by
Ricoooo
W
2002 Trailblazer LS stalling when put in D
Will9581
2 mo ago
2
23
935
2 mo ago
by
Ravalli Surfer
T
Vacuum Seal Locations
TheDukeWindsor
2 mo ago
2
152
2 mo ago
by
TheDukeWindsor
T
Worn Front Hub(s) Without A Bad Bearing?
turbo ink
2 mo ago
8
267
2 mo ago
by
Barbatio
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02-09 Vortec 4.2L I-6 Engine and Drivetrain
Q&A forum for engine and drivetrain repairs/modifications/tuning.
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