Chevrolet VENTURE 1998 Manual page 309

Rear Towing
A towing dolly must be used under the front wheels
when towing from the reay:
NOTICE:
Do not tow with sling-type equipment or the rear
bumper system will be damaged. Use wheel-lift
or car-carrier equipment. Additional ramping
may be required for car-carrier equipment. Use
safety chains and wheel straps.
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 dolly and raise the vehicle until adequate
clearance is obtained between the ground and/or
wheel-lift equipment.
5-12