Cadillac DeVille Questions

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heat my go from hot to ac or in summer from ac to heat the tac starts blinking off and on the gas meter says I can go 600 mi on 2 gal gas all these codes start blinking on and off mainly a d shows up in heat control....
Get into obd2 code
Window was raised by manually assisting by lifting on window when motor was on. Window has not been moved since it was raised. Obvious 2 clusters of parallel 2 inch inch Vertical scratches on inside of center of win...
feels as if i losing my stable swaying away from me
What do I need to do to fix the idle control system? The car idles up and down when parked and bogs down or stalls when stopping and Startin at lights and stop signs. Please help
I recently paid to have my 2003 Cadillac DeVille diagnosed and the mechanic came back the car needing a intake Plenum Coupling and an EGR valve. I am mechanically inclined and just replaced both. The car does run bett...
My wife and daughter were driving a 1995 cadillac deville we just purchased to try to get another problem fixed with the heater core. On the way back, they stopped at walmart and got stranded when they tried to leave;...
made sure the purge line was not blocked don't know what to try next 189 thousand miles
The mirror glass is so dark it can not be relied on at night.Can it be cleaned or just replaced.
SERVICE ELECTRICAL SYSTEM SERVICE STERING SYSTEM SERVICE GAS CAP CHECK ENGINE LIGHT
The security light on top of the dashboard flashed. My mechanic says I need some code or type of response to get the car to start again. What is the code and process to get the car to start after changing the battery?
I have got a misfire on cly.1 and 2 ive changed colis around and put new plugs and changed the map sensor the up stream o2 sensor put a different injector on 1 and 2 and put different boots on them and they still misf...
I changed spark plugs fuel filter but still no power going up hills and still get these codes.also changed mafs what could be the problem
i have a 1994 concours and you can feel heat coming out of the defrost but the blower doesnt work and it dont seem to change from defrost to the floorand you can hear some kind of motor on the firewall,it starts real ...
Soon after i put in the new radiator the car was overheating. I was able to drive it about 10 or 15 minutes before it would get hot. But i mostly used it for an in town car anyway. What could be wrong with it if it ha...
Cirtcuit malfunction if I remove the keys from the ignition then reinstall them and start the car two times. If I clear the code, then If I don't remove the keys, just shut the car off, then restart it, no codes come ...