See also:

Different Size Tires and Wheels
If wheels or tires are installed that are a different size than the original equipment wheels and tires, vehicle performance, including its braking, ride and handling characteristics, stabil ...

How OnStar Service Works
Push this blue button to connect to a specially trained OnStar Advisor to verify your account information and to answer questions. Push this red emergency button to get priority help from specially ...

Adjusting the Speakers (Balance/Fade)
BAL/FADE (Balance/Fade): To adjust balance or fade, press the if the radio has this symbol, or the knob until the speaker control tabs display. Continue pressing to highlight the desire ...