OnStar Services

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Wheel Alignment and Tire Balance
The tires and wheels were aligned and balanced at the factory to provide the longest tire life and best overall performance. Adjustments to wheel alignment and tire balancing will not be nec ...

Increasing Speed While Using Cruise Control
If the cruise control system is already activated, . Press and hold the +RES button on the steering wheel until the desired speed is reached, then release it. . To increase vehicle speed in small ...

2013 Cadillac ATS drive review
It's a great job, if you like the work. Performance engineer Kevin Zelenka gets paid to drive in what he calls the "nonlinear zone"--a marginal-grip region of time and space where he kee ...