Question about 1999 Cadillac DeVille
What you may be hearing is hum from a low voltage power module under the dash, which is activated every time you open a door. It should shut off after doors are closed, all timed devices (such as cabin lights) turn off and the key is not in the ignition. If your battery is in good condition, then either this module, the keep-alive module or something else drawing current is not shutting off the way it is supposed to. Start by checking for trouble codes (DTCs) with a good code reader.
Posted on Jan 20, 2018
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Posted on Jan 02, 2017
SOURCE: overheating,eveything looks ok.
I have a 97 Cadillac Deville with a northstar engine and have replaced it twice so far, so i answer this by experience...i've noticed to my two prior engines that went bad that the normal temp should NOT EXCEED 228 (normal), the red overheating light will come on at 250 and at 260 it will beep and tell you to stop engine - idle engine and will begin to smoke (overheat).
I hope this helps you and anyone else...by the way if your asking why did i replace my engine twice is simply because my cadillac is super clean inside and out, immaculate condition.
Posted on May 16, 2009
Hello, I dont know if you are willing to buy used but there is a place on e-bay that sells very good used parts and very reasonable prices and stand behind them. The shipping is free and when I looked to see if they had the parts your looking for he has them for $59.99 here is the link
Just copy the link and past into your browser.
I hope this information helps you and have a great weekend
Posted on Jun 06, 2009
you need to verify the dome lights are turning off before you walk away,something is draining the battery.check you car out after driving it and make sure radio and any other things all shut off.
Posted on Dec 28, 2009
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