8th Jul 2012, 22:58

I'm having a lot of problems with a 2003 Envoy XL SLT that my friend bought from my Mother In law. It has 114,000 miles on it. The A/C stops cooling when you change any of the settings, other than outside vent, at 60 degrees on the thermostat. It cools fine if you like to freeze or wear a jacket in 100 degree weather outside, while you're in the SUV.

Then today, was just driving along, and the check engine light came on for no reason at all. It still drove the same for 300+ miles. I'm not a mechanic, but with all the problems that I have been reading, it sounds like the computer on these SUVs does not work properly. That's just an opinion for now, but I'm going to have one of my friends check it out.

19th Dec 2015, 22:33

Hello... I am currently having the same issues. My battery was replaced earlier this year. My battery symbol popped up and it gave me the reading of Battery Not Charging. I switched out the alternator, thinking it would fix the problem and it did not. What did you find out with your issue? My vehicle is a 2003 GMC Envoy XLT.