After having to replace the ECM and ABS modules on my 2006 CTS, the heater blows cold air and the defroster blows lukewarm air. The heater hoses are hot, and the thermostat is working fine (at least the water temperature is good). Wondering if maybe some kind of control valve, or maybe a setting in ECM?
have the same problem?
Monday, January 27th, 2014 AT 9:46 AM