1998 GMC Suburban Owner's Manual - Page 262

Four-Wheel-Drive Vehicles If your vehicle is four-wheel drive, use the following directions: 6. When the vehicle is hooked up, release the parking brake and turn the ignition OFF to reduce battery drain. I I . Engage the parking brake. NOTICE: If your vehicle is equipped with four-wheel drive and the towing limits must be exceeded,a tawing dolly must be used under the front wheels or vehicle/powertrain damage will occur. 2. Turn the ignition key to ON. 3. Clamp the steering wheel in a straight-ahead position with a clamping device designed for towing service. (Do not use the vehicle's steering column lock for this.) 4. Place the transmission i n PARK (P). 5. Put the transfer case in NEUTRAL (N). See "Four-wheel Drive'' in the Index for the proper procedure to select NEUTRAL (N). the engine If will not start and your vehicle is equipped with the automatic transfer case?YOLImust transport the vehicle using a car carrier. 5-12