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Q:

Heating problem - heat on passenger side - not on drivers side
on 2004 Chevrolet Monte Carlo

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Cold air blowing out on drivers side - heat blowing out on passenger side - what do I do to correct. this is the 2nd time - first time they blew something out but this time it didn't help I have a diagnostic code of PO128 and PO171
(1) Answer
maybe the blend door is not working