Ok i've had 2 trans in the car so far. 3rd one is messing up. I just replaced the dp the old one went bad b/c the retards that replaced my trans didnt put my rubber hangers back on the dp. (was the gm dealership!!!) Ne way my dic keeps telling me to check gas cap constantly. The dealership fixed it like 4 times for me now. It's back. It also keep throwing codes at me. 1 of em says cat not up to efficiency (maybe b/c its high flow cat?) and it also keeps throwing code for exhaust leak (large) It's 2-3 of em wont ever go away. I keep erasing the codes but they keep coming up. The code for cat only came up once since I replaced the dp but the exhaust leak codes have ben there for at least 4-5 months. I have to wait for my dad to bring scanner back to give u the exact code. Also on startup sometimes the car dies. I try to restart the car. It dies over and over. If i give it gas right after it starts up runs fine but it only dose that every so often. Ok the codes for it are evap emission control system leak (large) It's p0455 no clue where its saying i have a leak at I've checked the hole exhaust system for where it is coming from. Any help would be appreciated and no more code for cat just the 2 evap codes
Originally Posted by Bio248
