My light comes on when I am driving highway speeds. It never stays on long, 5 min or so and as soon as you turn the ignition off, it clears the code so I cant get a read on it. It happens when downshifting and accelerating to pass or pull a hill. Any ideas? I do have a superchips tuner installed but I have tried both with and without programming installed with the same results. Other than the light coming on, the truckruns fine. I have about 125k on it and this has also happened through 2 cam sensors.

 

Maybe an over boost thing, but if the light came on it stored a code. How did you read the codes?

 

I suspect if you were to pull the codes with a scanner, its gonna be either P1211 or an overboost code.

 

Is that anything to worry about or is there something I can do to fix it?

 

Depends on the code.

 

I thought the Superchips tuner could pull codes? Just because the light goes out doesn't mean the codes dissapear. The PCM will remember the codes for a while, even after the light goes out.

Another P1211 guess here.

 

The 1705 will, but not sure what he has

 

I have the new controller. Just sent themmy old one and they sent me the new version. I will see if I can pull the code tomorrow. I know I could pull codes withthe old one but I never got a code for this scenario. I willpost what I find.