We had some work done on our 1998 Chevrolet Suburban at the dealership. It was necessary to take off the steering wheel to perform the work. I had been taking my son on a fishing trip all over Eastern Washington driving at 70 MPH. When we took my daughter up to college we came to the first stop sign and the steering wheel came off in my hands. It was impossible to steer the vehicle and I just went forward to the curb. The repair person did not replace the retaining nut on the steering wheel. We could have been killed had this happened when on the freeway at 70 mph. When trying to negotiate a replacement vehicle because we felt that the vehicle was unsafe, they would not deal with us and gave us a price that was not any type of deal as promised. Later we found out that this repair person had earlier put a vehicle into the repair shop wall by leaving it in gear, just missing another employee.