OnStar

See also:

When It Is Time for New Tires
Factors such as maintenance, temperatures, driving speeds, vehicle loading, and road conditions affect the wear rate of the tires. Treadwear indicators are one way to tell when it is time for new t ...

Under the Hood
A 3.5-liter V-6 produces 201 horsepower in front-wheel-drive Terrazas, and 196 hp in all-wheel-drive models. The new 3.9-liter V-6 features variable valve timing and develops 240 hp and 240 pounds ...

Selective Ride Control
The vehicle may have a ride control system called Selective Ride Control. The system provides the following performance benefits: • Reduced Impact Harshness • Improved Road Isolation • ...