2001 GMC Sierra 2500 HD Q&A

2001 GMC Sierra 2500 HD Question: AC temp control on passenger side does not work

passenger side air is hot no matter where control is set. -
Answer 1
You may have a failed temperature door actuator for the passenger side of your 2001 GMC Sierra. Fault codes stored in the AC control module would help to confirm this. You will need a scan tool to access these fault codes. -