Can any one tell me what the yellow plug is for under the headlight switch. (underside of the dash)
I can provide pictures if needed but I thought I'd ask first.

If the doors on my truck were not iced solid, I would go look.. :) I have not found any yellow plugs yet, it sounds interesting. The weather is supposed to warm up tomorrow, so hopefully will get into the truck then. Being two wheel drive, I don't use it in snow...

Mylash

mlash, thanks, I'm in a heated on the Allison forum at this time. Just wanted to know what it was. Saw it under there and just got curious.

I could be wrong but I think it is fro the air bag most yellow plugs are for safety things