Last night when I started my 04 H2 I had an array of electrical issues, from the research Ive done it appears to be the BCM, however I wanted to solicit a second opinion. When I first started the truck the instrument panel said unknown driver and the speedo and tach were the only gauges working. I also noticed that the radio kept trying to turn on but it was unable to do so. The climate control buttons are all working, and its showing the fan being on, but its not doing anything. Also all 4 doors have no lights and no power to the locks or windows. The car will also not lock from the key fob. It worked when I walked out to the car, but once it started it is now worthless. Anything to check before I replace the BCM?

Thanks,
Matt

 

It may need to be reset. Try removing both battery terminals and touch them together for about 5 seconds . As i said remove both terminals lol and just touch them together then put them back on the battery. This is a long shot but it has worked for us at the dealer. You should check to make sure all your ground wires are tight before as well.There are some under your kick panels that should be looked at before you take off the terminals . I hope this helps...

 

Sorry to revive an old thread but did you ever resolve this issue? I'm currently having the same problem.

 

There's a few threads on this around but I came to the conclusion that it basically boils down to what is here. Reset the BCM Body Control Module it's bad, going bad or just needin to be reset or it's going bad and resetting it may help for a while or do nothing. Good luck

 

I've tried searching but can't seem to find anything. Links, please?

 

What problems showed up?
I got my ABS and dash to start talking again simply by pulling out the 10 amp fuses under the hood for few seconds. They were the "IGN E fuse and IPC/DIC fuse" In that order first one checked cleaned and replaced and then the other. When I started it my lights flashed reset and the Check ABS message and instrument cluster issues all went away its been working since.

 

Hummer Forums - Enthusiast Forum for Hummer Owners - Search Results

You can read through these too

https://www.hummerforums.com/forum/s...archid=1159613

 

I just tried this and it didn't do anything. Any other suggestions?