2009 Buick Enclave Owner's Manual - Page 375

Maintenance Schedule 6-9 At Least Once a Month Tire Inflation Check Inspect the vehicle's tires and make sure they are inflated to the correct pressures. Do not forget to check the spare tire, if the vehicle has one. See Inflation - Tire Pressure on page 5-43. If the vehicle has a spare tire, check to make sure it is stored securely. See Changing a Flat Tire on page 5-67. At Least Once a Year Starter Switch Check Automatic Transmission Shift Lock Control System Check { CAUTION When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before starting this check, be sure there is enough room around the vehicle. 2. Firmly apply both the parking brake and the regular brake. See Parking Brake on page 2-27. Do not use the accelerator pedal, and be ready to turn off the engine immediately if it starts. 3. Try to start the engine in each gear. The vehicle should start only in P (Park) or N (Neutral). If the vehicle starts in any other position, contact your dealer/retailer for service. { CAUTION When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before starting this check, be sure there is enough room around the vehicle. It should be parked on a level surface. 2. Firmly apply the parking brake. See Parking Brake on page 2-27. Be ready to apply the regular brake immediately if the vehicle begins to move. 3. With the engine off, turn the ignition to ON/RUN, but do not start the engine. Without applying the regular brake, try to move the shift lever out of P (Park) with normal effort. If the shift lever moves out of P (Park), contact your dealer/retailer for service. Tire Wear Inspection Tire rotation may be required for high mileage highway drivers prior to the Engine Oil Life System service notification. Check the tires for wear and, if necessary, rotate the tires. See Tire Inspection and Rotation on page 5-49.