Radio/tape Cd Player problems of the 2001 Chevrolet Tahoe

I have had my Tahoe in the the dealer several times. Where to begin. We have had middle seat latches catch and need to be replaced, the front dash and radio bubbled up and peeled. . . That was replaced. A component in the steering column was replaced when the car would just up and die everytime you turned left. That was replaced. The back window latch broke while on vacation. It too was replaced. All the seat/seatbelt recalls were repaired. Then on 5/18/03 our power steering went out without any warning. They replaced it on 5/19/03 at the dealer. We took it back in on 5/30 with the complaint of it still not "feeling" right. It was hard to turn to the left. They found no problem. Then on 7/13/03 while driving with a car full of boys, then the car died and started on fire. The 2 men, both whom have backgrounds as mechanics that help me said that it the universal joint on the power steering box was rubbing against the positive battery cable. Once it rubbed thru the insulation the car caught fire. They had to disconnect the battery before they were able to tow the car because everytime the wheel moved a little it began sparking again. Also, they had to end up towing it from the front because the steering column wouldn't lock up when the ignition was off, so, they couldn't tow it from the back.