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

Acceleration issue. Been chasing this for awhile.

12

93

by Ravalli Surfer

Newest version of PCM Hammer FREE; P10, P12 and the P12 2mb PCMs now supported.

0

106

2

23

7K

Spark plugs and coil replacement

7

358

by Ravalli Surfer

Engine turning over without key!!!

5

3K

by Ravalli Surfer

Rev limited in park/neutral

2

27

9K

by pdcomm

[SOLVED] '05 TB - How do you loosen the fan clutch nut?

2

20

10K

1

224

6

6K

by rktb

10

561

Upgrades for Vortec 4200?

4

22K

by pdcomm

Looking to make my 03 Faster

16

15K

2002 4.2 engine in a 2006 trailblazer

1

1K

by Richardpotatoes

using HP tuners for E85

1

376

by gui67

6

4K

06 Envoy XL electrical gremlin

4

477

Vacuum cleaner sound from air filter pipe

16

578

by Ravalli Surfer

10

3K

2003 Trailblazer relearn Phoenix

0

294

What about auto light spark plugs?

11

7K

6

750

Locking fan clutch?

1

297

Wire routing for downstream O2 sensor?

3

387

by Ravalli Surfer

Help, wierd little issues(Vibration, bad mpg)

2

27

8K

by 2009ChevyTB4.2l

Proper engine temp./.

2

34

55K

4.2L Turbo Kit?

2 3

40

76K

by pdcomm

Normal Engine Temp

5

5K

3

548

increase fuel pressure

5

606

2008 LT I6 - TCM Location

7

11K

Putting an '06 Vortec 4200 into an '02 w/pix

2 3

46

35K

tightening spark plugs

17

10K

by Ravalli Surfer

Crank but no start

1

396

by Ravalli Surfer

[SOLVED] Random misfiring

7

26K

by whydididothis

Vortec 4200 Injector location/Replacement

11

21K

by Ravalli Surfer