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What causes a Cadillac DeVille to run great and then the dash lights blink on and off and the d on the panel and defrost come on and the heat can not be turned off without diconnecting the battery?
Wiki User
∙ 12y ago
***The problem you're experiencing is a malfunctioning ECM. It's the "body computer" for your vehicle and I've been through the same experiences, not to mention erratic inflation of the load leveling rear suspension. It can be attributed to the ECM going bad but there could be worse underlying causes such as a bad ground on the vehicle or moisture reaching the computer..both of which would continually cause ECM failure...i.e. you'll end up replacing it more than a few times and it will keep occurring with time. Chasing down a bad ground (the car has SEVERAL) can be costly or nearly impossible. It might just be time to part ways with it. I did with mine and it was rust free and otherwise perfect.
Wiki User
∙ 12y ago
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Why is there heat defrost only on the passenger side of a 1991 Cadillac Sedan De Ville?
i have the same problem with my 91 deville need answer please thank you in advance
What causes a Cadillac DeVille to run great and then the dash lights blink on and off and the defrost on the panel come on and the heat can not be turned off?
check ground wire on front of engine behind starter.
Why is your air conditioner only coming out of the defrost in the car?
It have battery
How do I fix the defrost on a 1997 Chrysler Sebring?
If it's stuck in defrost your battery died and messed up the computer. Disconnect battery for 5 or more min. Reconnect and it should ok then.
What would make the heat blow out of the defrost vents and not the front vents of a 1995 Cadillac Sedan Deville?
The moveable "baffle" inside the dashboard is not redirecting the air flow as it should. It's operated either by vacuum or an electric motor, in either case, repair is going to require the removal of the dashboard.
How do you repair ac controls on Sebring convertible?
If it's stuck in defrost your battery died and messed up the computer. Disconnect battery for 5 or more min. My 96 cooled and heated ok but was stuck in defrost
Have a 96 cadillac sls ac off need help?
Press the Auto button or the Defrost button.
Why would battery lose charge in 1999 Jeep Cherokee Sport when turn on defrost and there is squelling when defrost goes on so how fix when I have already had sereptine belt changed in past?
Have alternator checked. Should be getting 13-14 volts running. If not that, have battery tested.
Why does the fan on my 92 cadillac sedandeville turn on when not hot?
It will run continuously when the A/C or Defrost are on. If it is running without these being on then the thermal switch is defective.
When you turn on the rear defrost the head lights dimmed now when the rear defrost is on it don't work at all?
This can be caused by bad wiring, or bad fuses. This can also be caused by a draining battery, or an alternator that is not keeping charge.?æ
Why does the AC Heater NOT blowing out the vent on a 2004 Sebring?
If it's stuck in defrost your battery died and messed up the computer. Disconnect battery for 5 or more min. It worked on my 96
What does it mean when a freezer says Manual Defrost and Automatic Defrost?
Manual defrost is the instructions for you to manually defrost your freezer and automatic defrost is saying the freezer defrost on it's own.
