hi I have a rendezvous 2003 and I just change the heater core and now I'm having problems air blowing on the passenger side in heat on the driver side but only when you have it on defrost

Lesley Dudley

Asked by Oct 04, 2014 at 10:52 PM about the 2003 Buick Rendezvous CXL

Question type: Maintenance & Repair

2 Answers


Sounds like the blend door(s) are not opening or closing all the way. When the core was changed, the door might have something in it's way, like a wire from under the dash. If you had a mechanic fix it take it back and have him take a look at it. He should fix it at no charge, if he's any good.

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Lesley Dudley


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