2002 GMC SIERRA 2500HD LB7
i traded the truck for my 03 6.0 its a 2002 GMC SIERRA 2500 crew cab short bed. the radio didn't work so i pulled it out and took a look at the wiring only to find half the wires weren't even hooked up. after rewiring the radio it worked fine for a day ish. i went to my local reservoir for some pictures and my entire dash started smoking i quickly jumped out of the truck and disconnected the battery, then i started looking where it started from i found it completely melted the ground wire coming into my firewall from the engine bay, since then my truck has been stuck in 2/3 wont shift no radio no cluster and some other small issues? what would of caused this to melt? and any ideas on how much to replace the harness/labor any help would be greatly appreciated!