I had a problem the other day. This is on a 96 12 Valve truck. I had the batteries unhooked to do some welding on the truck. Hooked them back up and all I got was a click, I had the hood open, and saw a quick , but small arc flash on one of the batteries. I cleaned the battery cables, and how it's ok, but I have no headlights, tailights, speedo, tach, voltmeter, feuel gage, or radio, I checked all of the fuses on the side of the dash, as well as the larger ones in the black box behind the driver's side batters. Nothing was blown. Any ideas of what to check next, or what could be wrong? I really need to get it fixed very soon, as I have to pull a trailer this weekend.

Thanks in advance

Mike

 

On my '98.5 there is something called a "GEM" module I believe, located behind the dash in the area of the radio and below it that gave me problems when my electronic seat belt control module went out. I could access it from under the dash without removing too much.

Looks like a little black box with a printed circuit board in it. I was stumped at the time, so just opened it up, sprayed the entire board with electronic contact cleaner, reassembled it, and then things that hadn't been working, worked again, and have ever since. I don't know if it would be that simple for you, but might be worth looking at anyway.

 

Check the battery-to-body grounds.................