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Q: ac unit hot on driver and cold on passenger on 2001 Buick LeSabre

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I have a 2001 buick lesabre 82,000 miles. The air on the driver side is warm and the air on the passenger side is cold.
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Do you have the automatic temperature control system that allows driver and passenger to set to different temperatures?

Is so, a blend door motor could be at issue in the dahs.

If not, it's also possible that the air conditioning system could be slightly undercharged.
ok i was leaning towards a door motor/actuator problem,so tell me how to retrieve fault codes from hvac module.
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