2003 GMC Yukon Owner's Manual - Page 338

Four-Wheel-Drive Vehicles 5. Release the parking brake only after the vehicle being towed is firmly attached to the following vehicle. 6. Turn the ignition to LOCK. {CAUTION: Shifting a four-wheel-drive vehicle's transfer case into NEUTRAL can cause your vehicle to roll even if the transmission is in Park (P). You or others could be injured. Make sure the parking brake is firmly set before you shift the transfer case to NEUTRAL. Use the following procedure to tow your vehicle: 1. Firmly set the parking brake. 2. Shift the transmission to PARK (P). 3. Securely attach the vehicle being towed to the tow vehicle. 4. Shift the transfer case to NEUTRAL. See Four-Wheel Drive on page 2-26 for the proper procedure to select the NEUTRAL position for your vehicle. Dolly Towing 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. 4-56