GM Service Manual Online
For 1990-2009 cars only

The analog clock is not connected with any other vehicle system and runs by itself.

To adjust the clock, do the following:

  1. Locate the adjustment button, near the lower left corner of the clock.
  2. Push and hold the adjustment button to advance the clock hands. Holding the button down will cause the clock to advance faster. Release the button before you get to the desired time.
  3. Push and release the button to increase the time by one minute increments until the desired time is reached.