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

68K 38.2M

6 d ago

68K

38.2M

6 d ago

Air Induction

Performance Air Intake/Air Induction Modifications

11.6K 4M

7 d ago

11.6K

4M

7 d ago

Exhaust Mods

Performance Exhaust Modifications

12K 3.9M

13 d ago

12K

3.9M

13 d ago

Engine Tunes/Mods

Performance Engine Tuning/Engine Modifications

21.2K 8.8M

11 d ago

21.2K

8.8M

11 d ago

Transmission Mods

Performance Transmission Modifications

8.2K 4.6M

9 h ago

8.2K

4.6M

9 h ago

4x4 Drivetrain

4x4 Repairs & Problems

15.3K 8.2M

3 d ago

15.3K

8.2M

3 d ago

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

0

19K

2004 TB w/6 cyl to a 1994 5.7L TBI swap

0

11

2002 Envoy with l6 transmission issue(s)

2

78

0

57

How long have people driven with the P0017 code due to timing chain?

0

77

Oil pressure gauge dropping at idle

2

25

713

2004 Envoy crank no start

2

75

Ok we figured out the stall after start

1

103

2005 chevy trailblazer 4.2 vortec starts and dies.

1

78

Engine rumbles when in drive + braked/stopped

KML
14 d ago

4

131

Likely a bad water pump, is my fan clutch bad too?

KML
4 mo ago

2

29

2K

by KML

03 trailblazer ls sluggish acceleration and other woes

2 3

44

993

05 Ascender, Worth fixing?

0

33

ABS and Parking Brake Light with Chimes

6

238

Coolant leak - I think it's the water pump

4

85

Start up fine....sometimes wants to stall when first driving

12

313

05 GMC envoy 4.2l knocking sound

3

393

Loss of power but only for a few seconds

6

332

by Trl02

Trans fluid change at 150k

2

267

P0304 and P0106 codes

9

433

Intermittent electrical side effects?

1

104

by Bowtie_til_i_Die704

Plugs and coils go out every 5k miles

1

257

Which would cost the least?

1

142

by EnvoyBoy2004

Zero vacuum pressure from the pre-plenum to Fuel pressure regulator

1

99

I need to know a good location where I could put my REM wire hooked up into the fuse box what fuse can I use

1

106

Second EVAP Purge Solenoid in 4 years 17K miles.

5

318

Poll ... How many miles do you have on your trailblazer?

2 3

44

2K

Motor mount change

1

156

Replace torque converter in my 06 TB LS 4.2L-I6 4WD

1

168

by WJH

Shifter locking in reverse won’t shift or start!!!

0

129

Transmission issue.

1

192

Replace Torque Converter 06 Trailblazer LS 4.2L-I6 4WD

0

129

1

129

Wants to stall when AC kicks on

2

389

3

141

Thermostat information.

7

437

by Ravalli Surfer