OnStar

See also:

When to Change Engine Oil
This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and mile ...

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 ...

Steering, Suspension, and Chassis Components
Visually inspect front and rear suspension and steering system for damaged, loose, or missing parts or signs of wear. Inspect the power steering for proper hook-up, binding, leaks, cracks, chafing ...