hi, my wife had our 2003 trailblazer ltz (only 800 miles on it) out on Saturday, and pressed the off button. we had to keep it outside over night, and when we went to use it Sunday there was no display at the hvac display. the fans would not even blow. tried taking the key back out, went inside for 20 minutes and tried again. still no luck. the unit in the center console for the rear had no power either. even the radio was dead. thought maybe a fuse, but all were fine.
like anything else, had appointment for dealership to look at it, and when i started it up... it was working, and i couldn't get it to break again. it had been rainy over the weekend, but drier now. the dealership looked at it but only one "U" code showed up.
i have a 1 year old infant, and it's winter time, so i don't want to play around... anybody else have this problem, or better yet... know the fix.
thanks, john morley