The battery in my 99 GLS keeps draining. There is no rhyme or reason and it's certainly not a constant occurance, which makes it even more anoying. Sometimes it can sit for days and fire right up. Other times it will drain in a few hours.

All fuses are good, and the alternator seems to be charging the battery up. Once started, the car never gives me any trouble. Any thoughts would be appreciated.

 

so basically one day it starts, the next day it doesn't cause the battery is dead?? You could do an alternator check, but most of the time it would be a dead cell in the battery. Have you changed batteries and had the same problem? Maybe is something as simple as not closing the door all the way and interior light is draining the battery.

 

yeha check that all the door pins are working and that everything electrical is always shut down, but also, i had the same prob and found an old positive amp wire from someones old sound system under the carped, this was sometimes earthing on the floor pan and draining the batt! unlikley but worth a look!