Engine Cooling problem
2003 GMC Envoy 6 cyl Two Wheel Drive Automatic 80,000 miles
Car was running fine. I had my oil changed at Jiffy Lube. Car running OK with A/C running. Next day, battery died (not surprised because my daughter leaves interior light on frequently). I went to Advance Auto and they put in new battery.
As I was driving away with A/C running, the engine died and displayed message "oil pressure low". Then, "Stop Engine". Car runs fine as long as A/C is off. Once I turn on A/C, the problem occurs.
Now Service Engine Soon light is on.
OnStar ran diagnostics and said "Power train system has detected a malfunction related to the cooling system."
Local mechanic will look at it today. On phone he said it sounds like air compressor.
It is too much of a coincidence that this happened right after oil change and new battery? What do you think? Could it be something simple that went wrong when changing oil and filter, or installing new battery?
have the same problem?
Friday, March 12th, 2010 AT 9:55 AM