I have a 1999 'Burb K2500 with 105K miles on it. We had a heat wave (for us) last week.
When my wife ran the AC on the "Max" setting, there seemed to be a thumping sound coming from the passenger's side of the vehicle. I was able to duplicate it when I was driving.
It runs fine on the regular AC setting.
I'm going to take it to my mechanic to have him check it out tomorrow. I don't mind not using the "Max" setting--but I just want to make sure the whole AC system doesn't die on me some day.
Any ideas what might be going on?
Mark "Those who live by the sword get shot by those who don't"