91 seville - only defrost works for heat

02-06-2007, 10:01 PM
Could it be a switch? but where?
Thanks a bunch

butch h
02-07-2007, 07:49 PM
My guess would be the climate control module.

02-08-2007, 10:36 AM
Check the vacuum hoses under the dash. Look in the middle from the driver's side. One may be cracked or disconnected. IIRC, this will cause the system to default to defrost.

02-08-2007, 12:10 PM
possibly the programmer or the actuator motor

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