GM Service Manual Online
For 1990-2009 cars only

AM-FM Radio with Optional CD Player

If the vehicle has an AM/FM radio with an optional CD player, it has a (clock) button for setting the time. With these types of radios, the clock can be set with either the radio turned on or off.

To set the clock:

  1. Press the button until the hour numbers begin flashing on the display. Press the button a second time and the minute numbers begin flashing on the display. Press the button a third time and the 12HR or 24HR time format begins flashing.
  2. While either the hour or the minute numbers are flashing, turn the knob, located on the upper right side of the radio faceplate, clockwise or counterclockwise to increase or decrease the time. While the 12HR or 24HR time format is flashing, turn the knob clockwise or counterclockwise to select the default time settings.
  3. Press the button again until the clock display stops flashing to set the currently displayed time; otherwise, the flashing stops after five seconds and the current time displayed will be automatically set.

MP3 Radios with a Single CD or a Single CD and DVD Player

If the vehicle has a radio with a single CD or a CD and DVD player, it has a button for setting the time and date.

To set the time and date:

  1. Press the button and the HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year) displays.
  2. Press the pushbutton located under any one of the labels to change. Every time the pushbutton is pressed again, the time or the date if selected, increases by one.
  3. • Another way to increase the time or date, is to press the right SEEK arrow or the FWD (forward) button.
    • To decrease, press the left SEEK arrow or the REV (reverse) button, or turn the knob, located on the upper right side of the radio, to adjust the selected setting.

Changing the Time and Date Default Settings

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

To change the time or date default settings:

  1. Press the button and then the pushbutton located under the forward arrow that is currently displayed on the radio screen until the time 12H (hour) and 24H (hour), and the date MM/DD (month and day) and DD/MM (day and month) are displayed.
  2. Press the pushbutton located under the desired option.
  3. Press the button again to apply the selected default, or let the screen time out.

MP3 Radio with a Six-Disc CD Player

If the vehicle has a radio with a six-disc CD player, the radio has a MENU button instead of the button to set the time and date.

To set the time and date:

  1. Press the MENU button.
  2. Once the option displays, press the pushbutton located under that label. The HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year) displays.
  3. Press the pushbutton located under any one of the labels to change. Every time the pushbutton is pressed again, the time or the date if selected, increases by one.
  4. • Another way to increase the time or date, is to press the right SEEK arrow or the FWD (forward) button.
  5. To decrease, press the left SEEK arrow or the REV (reverse) button, or turn the knob, located on the upper right side of the radio, to adjust the selected setting.

Changing the Time and Date Default Settings

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

To change the time or date default settings:

  1. Press the MENU button. Once the option displays, press the pushbutton located under the forward arrow that is currently displayed on the radio screen until the 12H (hour) and 24H (hour), and the date MM/DD (month and day) and DD/MM (day and month) displays.
  2. Press the pushbutton located under the desired option.
  3. Press the MENU button again to apply the selected default, or let the screen time out.