Q: Air conditioner stays in defrost position regardless of setting 2001 Cadillac Seville SLS 70k miles.

asked by on February 20, 2018

AC blows only in Defrost position, regardless of when I put it to blow towards the front or the floorboards. I also hear a hissing noise coming from the engine housing.

My car has 70000 miles.
My car has an automatic transmission.

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