Why would the heater motor continue to run on a 1986 Cadillac deville when the car is off?
the fan has a high amp draw roasting the control module replace them both!!
Why on your 1980 Cadillac Coupe DeVille the air condictioner is blowing the air out of heater vents?
Assuming that the a/c was in good shape before it suddenly stopped working, the problem is probably the blower motor. As it turns out, this is very common. Try searching answered questions under "blower motor 1997 Cadillac Deville" I just had to change mine in a 1996 Deville. Motor aprox. $240.00/Labor aprox. $100.
I put a motor transmission in my 1991 Cadillac DeVille the motor transmission is out of a 1993 Cadillac DeVille I believe that the wiring harness is a little different?
How many Motor mounts are in a 1991-1993 Cadillac DeVille? Technically, only one (passenger side front). However, since the engine and transmission are bolted together they are suspended in the chassis as an assembly. So there are 3 transmission mounts and one engine mount that work together to suspend the engine and transmission as an assembly. Cadillac Man