GM Service Manual Online
For 1990-2009 cars only

To adjust the time:

  1. Press ,located on the radio, to enter the main menu.
  2. Turn until SET CLOCK displays.
  3. Press to select SET CLOCK.
  4. Turn to adjust the time.
  5. Press to update the time and VEHICLE TIME UPDATED displays.

To adjust the date:

  1. Press to enter the main menu.
  2. Turn until SET DATE displays.
  3. Press to select SET DATE.
  4. Turn to adjust the date.
  5. Press to update the date and VEHICLE DATE UPDATED displays.