1999 Chevrolet Suburban drivetrain & axles problems

On 8/29/00 my wife was traveling north on hwy 19 between meridian and collinsville ms, at approximately 2:20 p.m. When without any signs of vehicle trouble or malfunction the vehicle suddenly and misteriously when out of control and subsequently hiting another vehicle and running off the highway and over turning and coming to rest on upside down. Thankly my wife was wearing her seatbeat which probably saved her life.

1999 chevrolet suburban. As of 4/28/04 with only 47k miles, A/C compressor defective & dealer will not replace in spite of several attempts to repair before warranty expired, as soon as 3 months after purchase in october of 2002. Replaced brakes 3 times at our expense. Dealer (bob neill pontiac in winston-salem, nc refused to repair under warranty), steering problems, attempted repair, again at our expense. Replaced door locks and window mechanism's at our cost. Total piece of junk.