1998 GMC Suburban Owner's Manual - Page 260

Two-Wheel-Drive Vehicles If your vehicle is two-wheel drive, use the following directions: 1. Engage the parking brake. Four-Wheel-Drive Vehicles Limits -- 55 mph (88 k n d h ) or legal speed lilrait, clistcu~ce ~111imited is ib\* If your vehicle is fo~~r-wheel drive, use the following directions: 1 . Engage the parking brake. 2. Turn the ignition key to OFF. 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.) 2. Turn the ignition key to OFF. 4. Place the transmission in NEUTRAL (N). 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 in PARK (P). 5 . Place the transfer case in NEUTRAL (N). See "Four-wheel Drive" in the Index for the proper procedure to select NEUTRAL (N). 4. When the vehicle is hooked up, release the 5. When the vehicle is hooked up, release the parking brake. parking brake. 5-10