GM Service Manual Online
For 1990-2009 cars only

To set the time and date:

  1. Turn the ignition key to ACC/ACCESSORY or ON/RUN. Press to turn the radio on.
  2. Press and the HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year) displays.
  3. Press the softkey located below any one of the tabs that you want to change.
  4. To increase the time or date do one of the following:
  5. • Press the softkey located below the selected tab.
    • Press SEEK, or FWD.
    • Turn clockwise.
  6. To decrease the time or date do one of the following:
  7. • Press SEEK or REV.
    • Turn counterclockwise.

The date does not automatically display. To see the date press while the radio is on. The date with display times out after a few seconds and goes back to the normal radio and time display.

To change the time default setting from 12 hour to 24 hour or to change the date default setting from month/day/year to day/month/year:

  1. Press and then the softkey located below the forward arrow label. Once the time 12H and 24H, and the date MM/DD/YYYY (month, day, and year) and DD/MM/YYYY (day, month, and year) displays.
  2. Press the softkey located below the desired option.
  3. Press again to apply the selected default, or let the screen time out.