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02-09 Vortec 4.2L I-6 Engine and Drivetrain

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OEM Issues

Original Equipment Repairs and/or Problems
66.8K 36.1M
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Air Induction

Performance Air Intake/Air Induction Modifications
11.5K 3.9M
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Exhaust Mods

Performance Exhaust Modifications
12K 3.7M
  • 12K
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Engine Tunes/Mods

Performance Engine Tuning/Engine Modifications
21K 8.4M
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Transmission Mods

Performance Transmission Modifications
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4x4 Drivetrain

4x4 Repairs & Problems
15.1K 7.8M
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Sticky = = = New threads may not be posted in this catagory, please select a sub-forum = = =
0
19K
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2002 Envoy XL stalls with accelerating
1
67
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P0440 after Fuel Pump and Fill Tube Replacement
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48
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Radiator Leak?
3
246
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4x4 driving me crazy
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121
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194
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Another Crank but no start.
3
172
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Tranny line blew...now multiple issues
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163
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Possible ignition switch issue
1
161
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Ticking noise when accelerating
6
404
 by Ravalli Surfer
Heat
1
105
 by EnvoyBoy2004
2002 trailblazer electrical issues.
1
117
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P1512 please help
2
146
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Fan Clutch swapout to Electric Fan
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127
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5.3L V8 Starter Change in Less Than An Hour
1
89
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2
221
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Curious Mechanic
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253
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Checked a fuse and now engine won’t start
2
240
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Need input
12
721
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What in the f*** is up with this 4le60
1
151
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Tranny swap.. Old question for new TB owner
3
719
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Do I need to change the transfer case fluid if I have no CV axles?
8
811
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T
0
114
 by Handy333
how much is a new stater for trailblazer 2003
4
712
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'03 LTZ fuel filter location??
2
29
2K
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Is my transmission dead?
2
255
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‘08 TB Ls - when I make full turn - vehicle won’t move
12
890
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Parasitic Battery Draw and engine noise at idle:
16
1K
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Went through a puddle, service 4wd
1
393
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So i got suckered....
1
821
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Transmission shift solenoids
1
258
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RPM flare with Defrost or A/C on after cleaning Throttle Body
1
191
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Rough idle
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481
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Engine swap - pull with tranny or leave?
2
320
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Front End Noise While Idling
10
7K
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2008 trailblazer 4.2 vortec blue smoke on start up, goes away immediately
2
410
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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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