2002 Pontiac Firebird Repair Question

Topics covered: Door, Noise.
Mileage: 77,000 miles.

Asked on May 20, 2012

What auses the a/c make a loud humming sound only on high speed

Replied on July 13, 2012

1 more

Response from billmill5050
5 questions asked

Replied on July 13, 2012

where did you get your diagrams at?

Response from billmill5050
5 questions asked

Replied on July 14, 2012

i ran ac it open & closes a door when u go from ac to max ac

Response from billmill5050
5 questions asked

Replied on July 14, 2012

Thats your recirculation door actuator.

Answered by saturntech9 (expert)
23,394 answers provided