Service and Maintenance

See also:

Up-Shift Light
The vehicle may have an up-shift light. It indicates when to shift to the next higher gear for best fuel economy. See Manual Transmission for more information. For the CTS-V, the tracer ligh ...

Sound Menu
(Sound): Press this key or press CONFIG to access the Sound menu to adjust the treble, midrange, bass, fade, balance, and Digital Signal Processing (DSP). The system automatically stores audio ...

Cruise Control Messages
APPLY BRAKE BEFORE CRUISE If this message displays when attempting to activate cruise control, apply the brake pedal and try again. CRUISE SET TO XXX This message displays when the cruise co ...