2005 Buick Terraza Van Heater

[Walter D.]

Our Granddaughter's Buick Van heats good on driver's side and rear heater but only blows cold air on the passenger side front. I assume there is a duct flap that is not working. Is it electrical or mechanical? Appreciate any help, suggestion, on repair.

Thanks,

Walt Conner

[Terry]

Yes, it sounds like you have a problem with what is called a temperature door actuator. It is a small motor that turns the temperature doors in the dash to either hot or cold. There is one for each side of the dash.

[Walter D.]

Can this be accessed by owner or does it require a Service Tech.?

Walt Conner

[Terry]

A mechanic will have to replace this part for you. It must be indexed correctly and the system relearned.

[Walter D.]

Thanks, appreciate your help.

Walt Conner