2000 Chevy Silverado 4.8 2WD, No heat. This last fall I had a problem with the heat and air, I either had great heat or great air, not in the same day. If I picked one in the it stayed for the day until overnight then I could choose again. The truck temp. Is normal. The hoses going into the firewall - one is very hot at idle the other cold. I was told it wasn't the thermostat but the lower actuator door that must be stuck because that is the one that deals with the heat. I have replaced that and could feel the motor moving the door but still only get great air and trickle slight warm air. Its 30 below and I need heat and help. Thank you.
Sunday, December 12th, 2010 AT 11:57 PM