Close

Q: My rear Air Conditioning unit started blowing hot air. Front AC unit works fine. on 2003 GMC Savana 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
rlavoie@sbcglobal.net
(3) Answers
More often than not, this is the rear AC switch not functioning. The two systems share refrigerant so if one is working fine and the other not, it wont be the refrigerant but rather the compressor not working for one reason or another.
i had this same problem..what happened is there is a small hose running from the rear ac where the heater control valve in the rear is located this hose in diameter is7/32 could be worn through which causes the heat in the rear to constantly run change the hose and check the door to make sure that is open located under the hood..blowing cold now 95 dollar repair

Didn't find what you were looking for?