My guess is that you are not measuring something correctly. It is not possible to charge the battery while the car is not running, unless you have a battery charger connected.
SOURCE: T/C light comes on in the dash of my 03 Cadillac CTS
T/C would be traction control i would think
Robert
SOURCE: Burning rubber smell inside car-2003 CTS Cadillac
Diagnosing this will be subject to a process of elimination. It could be the radio, blower motor or any other accessory particularly ones with moving parts; Try switching those off and try to note when this problem occurs and what is on/whatyou are doing. Something is getting hot causing the smell so it will be a situation where the accessory will have to run a while before doing it. It is a possibility that there is an electical curcuit overheating, but less likely. Lets rule out accessories first and give us an update. GL
SOURCE: 2003 cadillac cts - car dies while driving
hi it sounds like the acclerrator pump on carby when you first take off is this whot it dose .
SOURCE: CD Mechanical Error on 2003 Cadillac CTS
take the radio apart and take them out one by one, i just fixed my yesterday
SOURCE: 2003 cadillac cts v6 3.2 liter. white smoke
u have a leak in the heater core the oily smell and mist is anti freeze sounds like a small leak because usually u would have a wet floor if it was large -two choices check and repair as necessary the core or can use an additive with a stop leak they usually work well on small leaks
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