Mechanics

HEATER

2004 Cadillac CTS • 6 cylinder FWD Automatic • 74,000 miles

My 04 cts blows cold air on drivers side and warm air on passenger side
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Scott29
January 11, 2011.




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.

Factoryjack
Feb 10, 2011.


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