I have a 2003 w/ auto trans. 9500 miles. A month ago it wasn't accelerating,hesitating, and could not get above 65mph, horrible mileage. I bring it to Chevy who tells me I have contaminated fuel (I hear this is a scam when they don't want to honor warranty) and they procede to replace fuel pump,gas lines, fuel injectors for a total of $1800. Now a month later the tranny won't shift into high gear and the engine is redlining just to do 65mph and mileage is around 14mpg highway. Anyone know what this could be? I don't wanna get hosed for another $1800 when they tell me it's contaminated fuel again. Also the first time they said they didn't know what it was contaminating the gas.