1998 Buick Riviera Owner's Manual - Page 214

\ CAUTION: A vehicle can fall fromcar carrierif it isn't a adequately secured. This cause a collision, can serious personal injury and vehicle damage. The vehicle should be tightly secured with chains or steel cables before is transported. it Don't use substitutes (ropes, leather straps, canvas webbing, etc.) that can be cut by sharp edges underneath the towed vehicle. Always use T-hooks inserted in the T-hook slots. Never use J-hooks. They willdamage drivetrain and suspension components. When your vehicle is being towed, have the ignition key turned to OFF. The steering wheel should be clamped in a straight-ahead position, with clamping device a designed for towing service.Do not use the vehicle's steering column lock this. The transaxle should be in for NEUTRAL (N) and the parking brake released. Don't have your vehicle towed on drive wheels, the unless you must.If the vehicle must be towed on the drive wheels, be sure to follow the speed and distance restrictions later in this section or your transaxle be will damaged. If these limits must be exceeded, then the drive wheels have to be supported ondolly. a 5-9