1999 Buick Lesabre Electrical system Problems

“Battery went down when clock left on because ignition was loose or faulty. So now I make sure clock is off when I shut it down. Car started up fine - drove it 6 miles - came back out to start it after an hour and nothing-no sound nothing-about 20 minutes later I tried it again and it started right up. There has been a grinding sound n cassette player with no cassette in it at one time. Dash lights lit up while driving so automatically thought there is short in dash board. …”

“The event leading to the incident involved turning on the rear defroster. After turning on the rear defroster I smelt smoke and burnt electronics. The rear window would not defrost. I turned the car off and pulled off the panel near the wire running to the rear windshield and discovered the power radio amplifier had melted and caught fire, resulting in burns to the panel and complete loss of radio and rear defroster. This of course made it impossible to defrost the rear windshield. …”

“Traveling about 65 - 70 MPH I noticed my speedometer went 'wacky', meaning it went down to 0 - 20 MPH and back up again to the speed I was traveling. Nothing else happened. The next time, maybe a week to a couple weeks later it did I it again, only I heard the doors unlock and it had died. Since then it has been happening more frequently. I have always been able to start it right back up. I can be out on the highway or in town. I usually put it into neutral, start it and keep going. It has happened as many times as 3 times a day, or it won't die for 3-4 days. …”

“In dec 2010 I turned on my rear window defroster on my 1999 Buick Lesabre. It did not work. After checking repair options in the auto manuals and on line, I still could not get it working. When my son came in for the holidays, we decided to check the wires at the rear window. We discovered a square unit attached to the body under the roof panel. This unit had an entry plug which was burned and an outlet plug leading to the grids on the rear window. It also had the radio antenna leading into it. The unit and the entry plug were burned. …”

“Failure of car to start when ignition key turned. Still had lights & dashboard. This occured 9:00 at night and could have left me stranded. As it was, I had been with a group of folks and someone waited to follow me. Next day mechanic towed car to shop, unable to fix because he not set up for diagnostics. Referred me the GM dealer. Dealer determined theft deterrant module shot. Once fixed, two days later, security light showing on dash. Now we need a new key lock ignition cylander switch and key. …”