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

HELP! P0300 after engine swap

1

545

by drutes

Gas Mileage improvements!!

2 3 4

71

43K

by pdcomm

05 Trailblazer I6 engine oil leak

1

473

[SOLVED] Envoy falls on its face.

18

3K

Swap 08 2WD Body to 08 4WD Frame

0

103

Swapping out 4.2 for 4.2 and gears question

0

168

by BlueC7

Another p0171 thread

1

116

another P0300 thread

5

285

by Ravalli Surfer

DTC P0300 Random Misfire

2

26

51K

0

240

Fuel smell when parked in garage

1

574

After market motor mounts

1

592

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

2K

4.2 6 engine issues ??

0

545

4

685

by dh4645

Engine Knocking or Noise

1

815

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

478

Front lower engine oil leak?

4

4K

Rough shut down

4

785

by TB-Al

Fuel Filter Question

1

370

by EnvoyBoy2004

I6 to 6.7L LQ4 with standalone fuel/spark?

3

974

0

358

still overheating

11

2K

2006 envoy rod bearings

0

280

by Jdiggitydogg1

Range AFM vs Diablo Sport S1000 AFM Disabler

0

307

Strange idle after hard drive? Anyone had this before?

5

674

by EnvoyBoy2004

Jackson Mississippi

5

473