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

HELP! P0300 after engine swap

1

561

by drutes

Gas Mileage improvements!!

2 3 4

71

43K

by pdcomm

05 Trailblazer I6 engine oil leak

1

483

[SOLVED] Envoy falls on its face.

18

3K

Swap 08 2WD Body to 08 4WD Frame

0

107

Swapping out 4.2 for 4.2 and gears question

0

177

by BlueC7

Another p0171 thread

1

125

another P0300 thread

5

290

by Ravalli Surfer

DTC P0300 Random Misfire

2

26

51K

0

257

Fuel smell when parked in garage

1

576

After market motor mounts

1

596

What weight oil do you use?

15

90K

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

3

2K

trailblazer LS 5.3 to lq4 swap

2

2K

Valve cover gasket job?

6

4K

16

3K

4.2 6 engine issues ??

0

559

4

689

by dh4645

Engine Knocking or Noise

1

820

by LSXHP

2

1K

by B_rock

Clutch and codes?

11

1K

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

485

Front lower engine oil leak?

4

4K

Rough shut down

4

788

by TB-Al

Fuel Filter Question

1

373

by EnvoyBoy2004

I6 to 6.7L LQ4 with standalone fuel/spark?

3

976

0

363

still overheating

11

2K

2006 envoy rod bearings

0

285

by Jdiggitydogg1

Range AFM vs Diablo Sport S1000 AFM Disabler

0

310

Strange idle after hard drive? Anyone had this before?

5

676

by EnvoyBoy2004

Jackson Mississippi

5

477