There other electrical system anomolies as well. For instance, when driving, the interior lights will flash on and off as if the door were being opened and closed. There is a aubible doulbe click MOST of the time when in turn on the ignition. Tonight, when I flashed the brights on, the interior lights flashed too.
Optional Information:
1999
GMC Suburban half t 5.4L
Already Tried:
Had it in the shop, the replaced a relay in the driver door they said had been getting wet.