I have a 06 Buick Lucerne and it is blowing cold on passenger side always, but the drivers side works correctly.I don't know what to do, it's weird.any ideas on how to fix this?
450

Asked by Brian Nov 28, 2015 at 03:02 PM about the 2006 Buick Lucerne CX FWD

Question type: Maintenance & Repair

It's very closed up underdash, is there
a mix/blend door or a valve, or what
normally malfunctions when this is
happening?

2 Answers
189,445

Paul answered 8 years ago

There is a blend door actuator that is probably malfunctioning.

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Guru2WF6M answered 4 years ago

Just had this happen to me took to dealer blend door was working ok. They flushed the heater core and is much better. I feel a new heater core is in the future. Left side was blowing 126 degrees 55 on the right. Now it's 125 and 110.

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