Chevrolet and GMC vans can be towed on all four wheels (flat towed) at speeds of less than 35 mph (56 km) for distances less than 50 miles (80 km), providing that the axle, driveline and engine/transmission are normally operable. The transmission should be in Neutral, the engine off, the steering unlocked, and the parking brake released.
The rear wheels must be raised off the ground or the driveshaft disconnected when the transmission if not operating properly, or when speeds of over 35 mph (56 km) will be used or when towing more than 50 miles (80 km).
Do not attach chains to the bumpers or bracketing. All attachments must be made to the structural members. Safety chains should be used. It should also be remembered that power steering and brake assists will not be working with the engine off.