2009 GMC Acadia Owner's Manual - Page 274

4-22 Driving Your Vehicle 5. Shift the transmission to N (Neutral). 6. To prevent the battery from draining while the vehicle is being towed, remove the 50 amp BATT1 fuse from the underhood fuse block and store in a safe location. See Underhood Fuse Block on page 5-90. 7. Release the parking brake. Notice: If the vehicle is towed without performing each of the steps listed under "Dinghy Towing," the automatic transmission could be damaged. Be sure to follow all steps of the dinghy towing procedure prior to and after towing the vehicle. Notice: If 65 mph (105 km/h) is exceeded while towing the vehicle, it could be damaged. Never exceed 65 mph (105 km/h) while towing the vehicle. Once the destination is reached: 1. Set the parking brake. 2. Reinstall the 50 amp BATT1 fuse to the underhood fuse block. 3. Shift the transmission to P (Park), turn the ignition to LOCK/OFF and remove the key from the ignition. 4. Disconnect the vehicle from the towing vehicle. Notice: Do not tow a vehicle with the front drive wheels on the ground if one of the front tires is a compact spare tire. Towing with two different tire sizes on the front of the vehicle can cause severe damage to the transmission. For vehicles being dinghy towed, the vehicle should be run at the beginning of each day and at each RV fuel stop for about five minutes. This will ensure proper lubrication of transmission components. Re-install the fuse to start the vehicle. To tow the vehicle from the front with all four wheels on the ground: 1. Position the vehicle to tow and then secure it to the towing vehicle. 2. Shift the transmission to P (Park) and turn the ignition to LOCK/OFF. 3. Set the parking brake. 4. Turn the ignition to ACC/ACCESSORY.