1997 Pontiac Grand Prix Owner's Manual - Page 246

NOTICE: Do not tow with sling-type equipment or the rear bumper fascia will be damaged. Towing a vehicle over rough surfaces could damage a vehicle. Damage can occur from vehicle to ground or vehicle to wheel-lift equipment, To help avoid damage, install a towing dollyand raise the vehicle until adequate clearance is obtained between the ground and/or wheel-lift equipment. Do not attach winch cables or J-hooks to suspension components when using carrier car equipment. Always use '6-books inserted in the T-hook slots. Attach T-hook chains to the T-hook slots in the floor pan support rails, just ahead of the rear wheels, on both sides. These slots are to be used when loading and securing to car carrier equipment. 5-12