My dashboard gauges are going crazy

[6x4cowboy]

I have a 2004 Excursion XLT 4wd, with the 5 speed auto in it. The truck has the 6.0L PSD in it. While driving my dash gauges will pin out at maximum, then drop to zero, then go back to normal. During that time the radio goes off as well, when the gauges return so does the radio. Someone said it was a module (GSM?), but I have no idea. Anyone else have this trouble??? If so how do I fix it???

[harrys91rs]

I think the GEM module is what they meant.

[SMKSTAX]

Do you have a leaky windshield possibly? This usually leads to having problems with the GEM module.

[6x4cowboy]

no leaks anywhere in the cab; windshield or where the doors seal.

[6x4cowboy]

Hey guys please...if anyone knows how to fix this and/or how much it costs to fix it. I haul horses with my Excursion and not having gauges is scarring the heck out of me. So any help would be appreciated.

[ColoradoDoug]

Did you get this figured out? We were heading to Omaha from Colorado a couple months ago in heavy rain, and the gauges went wild, and the radio shut off as well. Didn't do it again after that. As far as I can tell, the windshield doesn't leak.

My passenger rear window leaks slightly, and I'm looking for the seal to fix the issue.

Doug