Engine Performance problem
2003 GMC Safari 6 cyl All Wheel Drive Automatic 105xxx miles
I purchased the vehicle in missouri, had a complete tuneup w/ gm replacement parts, wires spark plugs etc. I moved to colorado and when going up the passes its seams very weak the light for the check engine light came on. My friend hooked up a tester it said the second cylinder missed fired. He checked it out said the gap was off, corrected the gap and put back on. It still comes on when I try driving over passes and the pwer seems week, the light goes off after I decend and back to normal highway the power is enough when driving around the normal interstate, except for the passes any help thank you.
have the same problem?
Monday, August 23rd, 2010 AT 1:25 PM