2005 GMC Canyon Owner's Manual - Page 253

Four-Wheel Drive Vehicles steps. On automatic transmission vehicles, use an adequate clamping device to ensure that the front wheels are locked into the straight position. {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) for an automatic transmission, or if your vehicle is in gear, for a manual transmission. 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 with all four wheels on the ground: 1. Drive the vehicle to be towed into position behind the tow vehicle. 2. Firmly set the parking brake. See Parking Brake on page 2-29 for more information. 3. Put an automatic transmission in PARK (P) or a manual transmission in FIRST (1). 4. Securely attach the vehicle being towed to the tow vehicle. For manual transmission vehicles, make sure the wheels are straight before proceeding to the next 5. Shift the transfer case to NEUTRAL. See Four-Wheel Drive on page 2-26 for more information. 6. Release the parking brake only after the vehicle being towed is firmly attached to the tow vehicle. 7. Turn the ignition to LOCK. If the tow vehicle will not be started or driven for six weeks or more, remove the battery cable from the negative terminal (post) of the battery to prevent your battery from draining while towing. After towing see "Shifting Out of NEUTRAL" under Four-Wheel Drive on page 2-26. 4-51