There is a bad or damaged ground to the the ECM
what wrong with my cruise control on my 98 Cadillac deville wont work. could you give me and answer why it stop working sue ann wimberly
Why is your 97 cadillac deville instrument cluster not working?
Disconnect battery for 5 minutes to reset computer, then try it!
Blown fuse? Refrigerant leak?
Check fuses
You don't. Working on the SRS is very dangerous. Take it to a professional for this repair.
Heater coil
Front turn signal light on the same side is not working.
i would like to know if there is a fuse that can blow for the vacum siliniod to stop working
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.
It appears your blower motor is not working correctly on your 1980 Cadillac Coupe Deville. The vents are for both AC and heat. You may also be losing vacuum pressure. If you cannot find the source, your mechanic can help you do so.
It will be fine as long as voltage regulator is working properly