• Tiny
  • Scott29
  • 2004 Cadillac CTS
  • 6 CYL
  • FWD
  • automatic
  • 74,000 miles

My 04 cts blows cold air on drivers side and warm air on passenger side

Tuesday, January 11th, 2011 AT 1:48 AM

1 Answer

  • Tiny
  • factoryjack
  • Expert
  • 4,263 posts

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.

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Thursday, February 10th, 2011 AT 4:15 AM

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