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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
67.6K 37.3M
  • 67.6K
  • 37.3M

Air Induction

Performance Air Intake/Air Induction Modifications
11.6K 4M
  • 11.6K
  • 4M

Exhaust Mods

Performance Exhaust Modifications
12K 3.8M
  • 12K
  • 3.8M

Engine Tunes/Mods

Performance Engine Tuning/Engine Modifications
21.1K 8.6M
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  • 8.6M

Transmission Mods

Performance Transmission Modifications
8.2K 4.5M
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4x4 Drivetrain

4x4 Repairs & Problems
15.1K 8M
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Sticky = = = New threads may not be posted in this catagory, please select a sub-forum = = =
0
19K
 by Jman423
Motor
0
26
 by Ramon
Rear differential fill
4
98
 by jztwentythree
Likely a bad water pump, is my fan clutch bad too?
2
28
1K
 by KML
Starter solenoid bolt
1
52
 by Ravalli Surfer
P1516 p2101 p0102
2
66
 by Jdiggitydogg1
Poor fuel economy and not as peppy
2
108
 by snoopswa
Thermostat information.
4
85
 by EnvoyBoy2004
2004 Envoy 4.2 Engine coolant level sensor
4
80
 by EnvoyBoy2004
Loss of power but only for a few seconds
3
209
 by plscolla
Aux cooling fan
0
88
 by Kylep
Help!!
6
299
 by Vega_TB
Fan Clutch swapout to Electric Fan
5
463
 by flyboy2610
New Transmission revs after 2nd gear. R, 1st, 2nd work, after that it just revs.
17
2K
 by TigerMike1
Engine knock with stalls. Engine swap TB>Envoy
2
217
 by Hoover_MuffMan
Oul leak after water pump replacement.
11
460
 by Vega_TB
Fuel tank capacity
1
190
 by EnvoyBoy2004
Electric cooling fan
0
125
 by Kylep
Random misfires
1
169
 by plscolla
Motor mount help
0
116
 by Kylep
03 Envoy falls on itself while under heavy acceleration but seems fine at light pedal
2
29
1K
 by conetopia
swapping in a 06 4wd transmission into a 02 4wd trailblazer?
1
223
 by EnvoyBoy2004
Trans cooler help!
0
59
 by Kylep
2004 Envoy won't move in any gear
9
423
 by drjascott
Wants to stall when AC kicks on
1
223
 by EnvoyBoy2004
Casey
0
146
 by Jack casey
What does this connector go to?
1
134
 by Vega_TB
04 envoy 4.2l Reduced Engine Power
11
678
 by GoodoleEnvoy
RPM fluctuation
5
263
 by rickym1490
Rough Idle but no check engine light
7
440
 by JGreco
Fuel pressure regulator
11
742
 by Envoy_999
03 TB p0128 running rough
10
403
 by Mudpaws
Solenoid equivalent
8
313
 by Grinder
4wd motor compatibility with a 2wd 08 envoy
1
117
 by EnvoyBoy2004
Entire coolant system replaced, still overheating
6
217
 by Cathairez
ABS Codes related?
1
141
 by TJBaker
02-09 Vortec 4.2L I-6 Engine and Drivetrain Q&A forum for engine and drivetrain repairs/modifications/tuning.
150.2K posts
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