Electrical Problems, gauges going wild

[kizinna0]

Hi Guys

My PSD 02 starts acting up. All in a sudden,all the gauges including all dash lights come on and off . The radio cuts out and the dome lights, if door is open, on and off. Sometimes, when I start the truck up everything works fine and then when it warms up it is going just crazy. It almost looks like the gauges recalibrate themselves on and on and on..... . Very disturbing. I checked the voltage, batteries, alternator ....., just fine. The only thing I can hear is a relay clicking behind the dash. I pulled the codes and cleared them. ( 1690, 05620) No difference.


I would appreciate any help or hints to solve this problem.

Thanks, Adrian

[mschn99]

you can pretty much isolate your problem to one of a small amount of things....

Bad gem module
water intrusion from leaking window into gem module
bad relay
Bad cluster (doubtfull based on symptoms)

[kizinna0]

Hey Marc

Thanks a lot for your quick reply. Can you please tell me what the GEM Module stands for and where I can locate it. You really saving my life here.

Thanks a lot , Adrian

[mschn99]

the Gem module stands for generic electric (or electronics, i cant remember) module.....

It is bolted to the back of the inside fuse panel.....the first thing to check for would be any water intrusion, especially if all this happened after a good rain, your winshield may be leaking if you find that....

[kizinna0]

Marc, thanks again

I took the whole fuse panel out yesterday, no signs of a water problem. (I did not see any). Are there any other Relays or fuses, which could go bad somewhere behind the gauge cluster or somewhere back there?

Thanks, Adrian

[Badfish740]

My gauges aren't going nuts but my radio and dome light works when it wants to-whenever they turn on or turn off I hear a click from behind the dash that seems to be coming from the far left. I'm going to check for water this weekend-what else would cause one to go bad in a truck that's barely 4 years old? How much are they?

[codyjolly]

Well my gauges will mess up but i can unplug a wire harness from under the dash that is my remote keyless module and plug it back up and they will start working till i turn my radio on and every time the bass hits the gauges will bounce and when i turn my radio off the gauges will go back to normal

[codyjolly]

I forgot to include this in my last message but i have a 94 PSD and that any help would be great.
Thank you

[STLstroker]

I am having the same problems now