Hey guys, I run in to problem with my 2003 Hummer H2. The car is been sitting for while and the battery was completely dead. When I jumped it, the car's door panel and gauge cluster works just fine. However, when I turn the engine on, everything on my door panel stops working including my gauge cluster. I was hoping to find some answers and help, or perhaps this issues has occurred on your Hummer as well. Any help I can get would be extremely appericated!

 

check your battery voltage when running. maybe the alternator is not charging and you are at or below 10 volts on the battery. 10 volts is bare minimum to stay running.

 

Also, after the battery is recharged, disconnect it via the ground cable for about 30 seconds. It kinda reboots everything. I've had a few issues with the dash, dash lights, radio staying on, locks not working, ect.... When I was dealing with a parasitic drain I had.