See also:

Potential Issues
Some OnStar services are disabled after five days. OnStar cannot perform Remote Door Unlock or Stolen Vehicle Assistance after the vehicle has been off continuously for five days. After five ...

Tire Rotation
Tires should be rotated every 12 000 km (7,500 mi). See Maintenance Schedule . Tires are rotated to achieve a uniform wear for all tires. The first rotation is the most important. Any time unusu ...

Wheels and Trim—Aluminum or Chrome
The vehicle may have either aluminum or chrome-plated wheels. Keep the wheels clean using a soft, clean cloth with mild soap and water. Rinse with clean water. After rinsing thoroughly, dry with a so ...