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

2008 4.2 LS Engine wiring harness replace or repair

13

87

Rough shut down

12

5K

PCM Swap-Truck Won't start

9

8K

by Ravalli Surfer

Atlas 4.2L "Race" camshafts

0

200

2004 Chevy trailblazer EXT Lt no start

4

314

04 Trailblazer Engine Swap

2

22

38K

by pdcomm

2

39

894

Acceleration issue. Been chasing this for awhile.

2

34

2K

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

0

409

2

23

8K

Spark plugs and coil replacement

7

671

by Ravalli Surfer

Engine turning over without key!!!

5

4K

by Ravalli Surfer

Rev limited in park/neutral

2

27

10K

by pdcomm

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

2

20

12K

1

328

6

6K

by rktb

10

708

Upgrades for Vortec 4200?

4

23K

by pdcomm

Looking to make my 03 Faster

16

16K

2002 4.2 engine in a 2006 trailblazer

1

1K

by Richardpotatoes

using HP tuners for E85

1

494

by gui67

6

4K

06 Envoy XL electrical gremlin

4

570

Vacuum cleaner sound from air filter pipe

16

712

by Ravalli Surfer

10

3K

2003 Trailblazer relearn Phoenix

0

341

What about auto light spark plugs?

11

7K

6

955

Locking fan clutch?

1

352

Wire routing for downstream O2 sensor?

3

433

by Ravalli Surfer

Help, wierd little issues(Vibration, bad mpg)

2

27

8K

by 2009ChevyTB4.2l

Proper engine temp./.

2

34

56K

4.2L Turbo Kit?

2 3

40

79K

by pdcomm

Normal Engine Temp

5

6K

3

609