I have a 2003 Denali. I hope someone can help me with this. My truck has been discharging the battery like crazy. I can jump my battery and if i use my truck, it keeps the battery charged. As soon as I park it, the vehicle won't start the next day. this happens everyday. I have taken my vehicle to an electric shop and they found a couple of shorts in the vehicle, 2 in the radio and one in the ignition. My vehicle was involved in theft and recovered. An aftermarket alarm was installed and a New 2005 touchscreen navi radio was installed. Thinking that the alarm might have been the problem, i had it removed and returned stock alarm. I pulled the 2 fuses for the radio and I still have the problem. Anyone have any solutions?

You might have a bad cell on the battery...try putting in a new one:2cents:

I've changed the battery 2wice and still no luck.