Alternator/generator/regulator Problems of Cadillac STS

After car had been immobile for a week, attempted to start and engine just clicked and car would not start. I placed the battery on charger without disconnecting from terminals, charge battery for approximately 10 hours. Tried to start vehicle again the next day. It started and I drove directly to an auto parts store (auto zone) and had them test my battery and alternator my system tested good, so I drove for a couple more days, this time I kept a close watch on the battery volts and they kept fluctuating up an down. I parked the car for another couple of days and the problem came back again. So I charged the battery again and then took it to a gm dealership and requested they troubleshoot it. They charged me 45. 00 and told me everything was good. Now I have the car at home again with a dead battery. I need to find a solution to this un safe problem. The car can shut off at anytime and I won't e able to restart w/o a jump. . Has there been other complaints similar to mine ? help help.

See all problems of the 2006 Cadillac STS 🔎.

On 11/27/00 car leased from chevy dealer and onstar put on by Cadillac dealer. On 01/08/01 car dead in drive,Cadillac dealer installed new battery. On 10/01/01 car quit while driving, Cadillac dealer installed new generator. On 7/18/02 car dead in drive,chevy dealer replaced generator. On 9/13/04 car dead in drive ,chevy dealer found nothing. On 11/18/04 car dead in doctor's lot,chevy dealer found nothing and sent it to Cadillac dealer who also found nothing. Two days later car dead in store lot. Sent back to Cadillac dealer who installed generator and battery. On 8/31/05 car stalled after being picked up from chevy dealer, returned to chevy dealer who found nothing. Sent to Cadillac dealer who replaced some computers. Chevy dealer picked car up and drive 9 miles before car quit. Returned to Cadillac dealer who replaced ignition switch. Returned to me. Five(5) days later car dead in drive and returned to Cadillac dealer. Cadillac dealer disconnected onstar and said try it.

See all problems of the 1999 Cadillac STS 🔎.