02-09 Vortec 4.2L I-6 Engine and Drivetrain | Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

OEM Issues

Original Equipment Repairs and/or Problems

69.3K

42M

3 h ago

69.3K

42M

3 h ago

Air Induction

Performance Air Intake/Air Induction Modifications

11.7K

4.3M

17 d ago

11.7K

4.3M

17 d ago

Exhaust Mods

Performance Exhaust Modifications

12K

4.1M

1 d ago

12K

4.1M

1 d ago

Engine Tunes/Mods

Performance Engine Tuning/Engine Modifications

21.2K

9.5M

2 d ago

21.2K

9.5M

2 d ago

Transmission Mods

Performance Transmission Modifications

8.3K

5M

4 d ago

8.3K

5M

4 d ago

4x4 Drivetrain

4x4 Repairs & Problems

15.6K

9M

13 h ago

15.6K

9M

13 h ago

Sticky = = = New threads may not be posted in this catagory, please select a sub-forum = = =

0

20K

by Jman423

New to the site with 4x4 major problem

2

24

219

by cage47

Engine rebuild question

2

237

by NJTB04

No start except when i jiggle Steering Wheel.

2 3 4

79

2K

P0171 on my 04 Trailblazer LT won't go away

0

113

by ghost.leader07

Tranny swap. Torque converters are different.

13

627

by Ravalli Surfer

Transmission slow to shift while staring in drive,

2

240

by Ravalli Surfer

AC Compressor bypass

8

508

8

303

At my wits end.

7

710

by Ravalli Surfer

2002 GMC Envoy I6 no oil pressure.

15

519

P0411, The voltage range reading of the sensor & the PID on the Torque APP

6

422

Knocking noise coming from engine

4

271

by Zacharybishop

2

145

by EnvoyBoy2004

08 Envoy stumbles

1

122

Engine Revs to Max rpm after new fuel injectors & spark plugs

2

35

920

Knocking/clacking that came out of nowhere

1

214

by Ravalli Surfer

2

150

Weird arc welder noise coming from right side or top of engine

6

1K

by Ravalli Surfer

Is it worth it?

7

523

blew 2 holes in my rear Differential

9

529

08 trailblazer bizarre behavior after 4.2 engine swap

7

398

2

192

by Ravalli Surfer

Engine heat issue

1

150

by Ravalli Surfer

Truck won’t creep 4.2

19

427

by Ravalli Surfer

15

755

by Ravalli Surfer

P0300 after sea foam

11

659

Brake fluid change

3

219

by Ravalli Surfer

P0014 and p0017 codes

2

24

666

by Ravalli Surfer

Mysterious Overheating

10

2K

by Ravalli Surfer

Transmission flush

3

220

Power steering fluid

4

327

Power steering fluid color

8

328

by Brendan Schneider

Rough idle, stalling, spit and sputter after adding fuel

1

154

by Ravalli Surfer

Need help surging and mpg

1

188

Serpentine belt problems 07 Trailblazer 4.2 L

2

297