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Q:

What causes the passenger air to blow warm when the drivers side is cold? on 2006 Buick Lucerne

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The temp is set the same on both sides, but hot air comes out of the passenger vents.
(1) Answer
(1) Comments
blend door motor. you need a shop with a scan tool that can operate the doors to test them.

Roy
Thank you sir. I know a shop with a Scan tool.