My 04 cts blows cold air on drivers side and warm air on passenger side
have the same problem?
Tuesday, January 11th, 2011 AT 1:48 AM
This is most often a symptom of an HVAC actuator, or blend door problem. It can also be caused by inadequate temperature or flow through the heater core. The first thing to do would be to scan for codes. A typical code reader is only going to give you OBD fault codes, you need a scan tool that is capable of accessing other modules.