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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
66.3K 35.3M
  • 66.3K
  • 35.3M

Air Induction

Performance Air Intake/Air Induction Modifications
11.5K 3.9M
  • 11.5K
  • 3.9M

Exhaust Mods

Performance Exhaust Modifications
12K 3.7M
  • 12K
  • 3.7M

Engine Tunes/Mods

Performance Engine Tuning/Engine Modifications
21K 8.3M
  • 21K
  • 8.3M

Transmission Mods

Performance Transmission Modifications
8.1K 4.3M
  • 8.1K
  • 4.3M

4x4 Drivetrain

4x4 Repairs & Problems
15K 7.6M
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Sticky = = = New threads may not be posted in this catagory, please select a sub-forum = = =
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19K
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2008 trailblazer 4.2 vortec blue smoke on start up, goes away immediately
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2008 Trailblazer LT 4.2 Vortec blue smoke on start up...
0
21
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05 transmission shift issue
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40
 by Doug T.
2005 Trailblazer Stalling Issue
2
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Engine swap - pull with tranny or leave?
1
102
 by freenet_2k
Rod knock? What else could it be...
0
44
 by silver007
04 blazer harsh iddle issue
6
842
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battery?/alternator?/or something else
1
269
 by pdcomm
Rough idle
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459
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battery light on faint
0
117
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Problem after cleaning throttle body.
17
56K
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Cold morning start, then stall... twice
6
15K
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Ticking Noise
13
33K
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Front End Noise While Idling
9
6K
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How often should oil changes be done?
2
20
25K
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4.2L Oil Pressure Gauge Isn't!
14
25K
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Whining kind of sound - normal?
7
21K
 by rsmm0224
hard start after getting gas
0
12K
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How many lt of oil
4
16K
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Mobil1 Switch
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30
33K
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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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