gmcC3syclone

ive tried a lot of things but cant get rid of it usually it will come on after 5 to 10 min of driving then it shuts down all my trucks power then i have to shut on and off a few times but then it comes back a little later and im not even getting into the boast driving it easy i just put a speed dest tune on it and the same problem very aggrevated if any one has any soloutions please help thanks

BigTex

iTrader: (16)

Do you have any scanning software? Any clue what codes are being set to make it go into REP?

In my experience, my REP issues have always involved the throttle body. Have you removed the TB or messed with the harness lately? I'd look there first unless you know the code thats setting off the REP.

gmcC3syclone

ive put on a new throttle body on ,a 90 m from a gto and got a plug in harness from spears and had an adapter made for the bolt pattern and it drove good for a few days then started doing it again then when i got my speed dest tune it drove good for a few days thought it was gone then it was back again i havent had it at a dyno yet i wasnt there when he did it so im not sure he thought he fixed it i just got a wide band to hook up havnt put it on yet thankx

ogkevin13

try to see what DTC your getting.

KySilverado

iTrader: (7)

Mine did this after installing a 2 bar os and SD tuning. May or may not be your problem.

https://www.performancetrucks.net/fo...d.php?t=379820