2007 GMC Yukon electrical system problems

While driving the vehicle, heard a clicking/cracking/popping noise, smelled a strong odor of smoke and burning smell from the front passenger side underneath the glove box area. At the same time the widows, mirror, and electric locks on the passenger side of the vehicle would not operate. I stopped the vehicle and turned it off. I started looking down under the glove box area and could still smell a very strong burning smell coming from that area. Also the vehicle would not restart.

I accelerated onto the freeway to catch up with on coming traffic on my 2007 GMC yukon. When I hit top speed in the 3rd lane not even a quarter of a mile at 65-70MPH, the accelerator got stuck making my vehicle travel at 80-90MPH on its own. I stepped on the brake but my vehicle was still accelerating. I then put the car into neutral and took the next closest exit. I was blocking the exit with on coming traffic behind me and luckily a few good samaritans help me push my vehicle to safety.