2002 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 279

Dolly Towing (Two-Wheel Drive Vehicles) Two-Wheel-Drive Vehicles Two-wheel-drive vehicles, should not be towed with the rear wheels on the ground. Two-wheel-drive transmissions have no provisions for internal lubrication while being towed. To properly tow these vehicles, they should be placed on a platform trailer with all four wheels off the ground. In rare cases when it's unavoidable that a two-wheel-drive vehicle is to be towed with the rear wheels on the ground, the propeller shaft to axle yoke orientation should be marked and the propeller shaft removed following the applicable service manual removal/installation procedure. Dust or dirt can enter the back of the transmission through the opening created by removing the propeller shaft if proper protection is not provided. Also, check the transmission fluid level before driving the truck. When the vehicle is properly attached to the tow vehicle and is ready to be towed, turn the ignition to LOCK. Clamp the steering wheel in a straight-ahead position with a clamping device designed for towing. Four-Wheel-Drive Vehicles Four-wheel-drive vehicles are not designed to be dolly towed. If you need to tow a four-wheel-drive vehicle see "Dinghy Towing" earlier in this section. NOTICE: Dolly towing a four-wheel-drive vehicle will damage drivetrain components. Don't dolly tow a four-wheel-drive vehicle. 4-51