1997 Buick Park Avenue Q&A

1997 Buick Park Avenue Question: I have a cyclin creaking noise coming from the heater control area. Can you help

it cycles on and off in five second intervals, each cycle lasting about ten seconds, whether I have have the unit on or off. Sounds like some thing need to be oiled badly. -
Answer 1
Most likely a heater blend door, does everything work on the heat/AC? -