hey my name is matt. my friends drives a 2002 GTP. basically all stock i think. his car starting knocking really hard on saturday on the local HWY. he wwas doing about 55mph or so and was not beating on it...he regularly changes the oil. and i belive he uses Royal Purple or whatever. i was unable to go see the car yet, it is still at the gas station on the HWY. he said it starting knocking hard and had a major power loss. maybe went down on cylinders? no oil or any other fluids leaked out. my car did the same thing last summer, found out the throttle body just got snapped closed (2005 Ion Redline (supercharged)) it reset itself after 5 minutes affter the car was shu off it was a GM feature of resetting itself or something.
alright but with the GTP, any suggestions on problems. im going over after school to plug in the scanner for codes
