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

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.

Asked by for the 2001 Buick LeSabre
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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Iam getting part tomorrow to try .look for answer tuesday11th.