Engine Tunes/Mods | Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

2004 TB, 6-cyl. occasional miss

1

221

2 3

40

21K

by LvmyTrailblazer03

Oil galleys for pressure sensor, turbo feed

10

4K

P0300 code killing me

7

6K

Code will not go away!! HELP!

7

2K

Replace TPS (throttle position sensor)

7

51K

02 Fuel pump not 'humming' when ignition is turned on

3 4 5

93

2K

Vortec 4200 Injector location/Replacement

9

18K

Enigne wiring 4.2l

2

177

by [email protected]

HELP! P0300 after engine swap

4

1K

Gas Mileage improvements!!

2 3 4

73

45K

by Ravalli Surfer

Rough shut down

11

1K

05 Trailblazer I6 engine oil leak

1

712

[SOLVED] Envoy falls on its face.

18

4K

Swap 08 2WD Body to 08 4WD Frame

0

175

Swapping out 4.2 for 4.2 and gears question

0

246

by BlueC7

Another p0171 thread

1

192

another P0300 thread

5

373

by Ravalli Surfer

DTC P0300 Random Misfire

2

26

53K

0

363

Fuel smell when parked in garage

1

668

After market motor mounts

1

744

What weight oil do you use?

15

91K

Can any tuner with efi live tune P10 PCM for turbo?

3

2K

trailblazer LS 5.3 to lq4 swap

2

3K

Valve cover gasket job?

6

5K

16

3K

4.2 6 engine issues ??

0

833

4

812

by dh4645

Engine Knocking or Noise

1

925

by LSXHP

2

1K

by B_rock

Clutch and codes?

11

2K

More horsepower

6

2K

by Linusridesred

flex fans...will they work on our trucks?

3

2K

2004 Envoy 4.2 Lack of power while warming up and..

2

654