About a month ago my garage door opener stopped working. I just recently noticed that when I shut my truck off it works. This leads me to believe that something is no longer shielded and is blocking the signal from my opener. I have done nothing, no add-ons, no ner stereo, nothing. What should I look at first? It's a PIA to shut off the truck when I back out of the garage, then shut it down again when I get home to open the door. Any ideas are greatly appreciated! Oh if it matters 94 with stock stereo, stock everything else. PIAA Fog lights, everything else stock.