[Wakko]

Last night when returning to my truck I noticed that the time and date had reset back to factory default. As I drove home at night, I flashed my high beams and immediately felt a stumble to the truck, the airbag lights went on, and the parking assist deactivated notice came on. A half second later, everything went back to normal. I tried it again later and flashing the high beams had no effect. This morning everything was fine, but when I parked the truck again, it lost complete power immediately upon shutting off the truck, and the radio needed resetting again. When it does this I heard a faint buzz under the left side dash, perhaps at the fuse box.

I can't find a RAP listed on Rock Auto, Advanced Auto, or GM Parts Direct, and no direct reference to one here. Does it have one? Any other ideas?

 

[Wakko]

We did have a cold front two weeks ago...it got down to 62 degrees. :lol:

Ok, first check cables...second check ground. Is the frame connection point easy to spot when I'm under the truck? I'll be working for the next few days and won't get to the GMC until Sunday.