We have a 2000 Chevy Express G1500 Van w/5.7l engine. Occasionally the map lights get left on and the battery drains. Today the Battery was dead again (we left the Garmin plugged in and had not run the van for several days - and it has been COLD). We put the charger on it and tried to start it - no luck. We tried to jump it, again, no luck. The van would slowly turn over but would never start. It seemed like it just couldn't get enough juice, even when we were jumping it.
So I bought and installed a replacement battery. When I tried to start the van, I noticed that the amp meter on the dash was down farther than normal. It started to turn over, I heard a "pop" and everything went completely dead.
Is there a main fuse or something that I should check? Any suggestions?
Thanks

 

I figured this out. It was caused by a poor connection at the Battery. We disconnected and and reconnected the new battery and everything worked fine.