RussKincaid
Newbie
I see this problem a lot with some of the newer trucks and it's usually pretty easy to figure out. First, watch the A/C compressor to insure when you turn the A/C to max that it turns on and stays on. If not, you have to find out why. The low pressure cut-off switches and wires are always suspect., make a wire jumper and short across the switch. It's located on the the big can by the firewall. Check pressures 30-50 low and 200-250 high are generally regarded as normal. pressures without the compressor running won't tell you very much. Post back with results and I'll try to help you out.