1994 Chevrolet Blazer seats problems

Vehicle crash, caused by the brakes going out. Applied the brakes at 5-10 MPH and the vehicle turned left and went out of control, then crashed into another vehicle. One person was injured in accident. Air conditioner was blowing hot air due to loose fitting. Popping noise in the center of the windshield while driving over bumps, dealer found no problems. Banging noise in the right rear over bumps, due to tailgate being out of adjustment. Steering wheel noisy while driving.

I was driving down the road, came to a stop sign, then started to accelerate. All the sudden my seat back broke and fold backward, in a laid down position, almost causing me to crash. A few months later, the passenger side seat back did the exact same thing. I removed the broken seats, and installed two non adjustable seats from a old aurora, using the original seat bracket, which bolts the seat to the floor pan.