GM Service Manual Online
For 1990-2009 cars only

AM/FM Stereo Radio (UM7 or UM6)

On/Volume/Balance Knob

Press the on/volume/balance knob in order to turn the radio on and off. Turn the knob clockwise in order to increase the volume and counter clockwise in order to decrease the volume. The ignition lock cylinder must be in the ACCESSORY or the RUN position for the radio to operate.

Finding a Station

Band: In order to tune the radio, push the AM/FM button and select the band. Pressing this button alternately selects either the AM or FM band. The selected band will be on the display.

Tuning the Buttons: Press the button with the upward arrow in order to increase the frequency. Press the button with the downward arrow in order to decrease the frequency. In order to use automatic tuning, push one of the tuning buttons for a half a second or longer. The frequency display will stop automatically when a live frequency is detected. In order to tune stations manually, push one of the buttons for less than half a second.

SCN: Press the button in order to listen to the next radio station for a few seconds. The radio will scan stations until the scan button is pressed during the five seconds that a station is being reviewed.

Preset Buttons: The six numbered preset buttons let you return to your favorite stations. You can set up to 12 stations (6 AM, 6FM). Complete the following steps to preset a station: Tune in the desired station. Press one of the preset buttons for two seconds or longer. Whenever you press that numbered button for less than two seconds, the station you set will return.

DISP Button: With each press of this button, the display alternates between the time, alarm status, and radio frequency. The display automatically returns to the clock mode after a few seconds when the radio is on.

Setting the Tone: Turn the tone knob clockwise in order to emphasize the treble. Turn the tone knob counterclockwise in order to emphasize the bass.

Adjusting the Speakers: Pull out the power/volume/balance knob. Turn the knob to the right or left, depending on which speakers you want the sound to come through.

Using the Timer: The timer in your radio can be used to set a time from 15 minutes to three hours. An alarm sounds when the time expires. In order to set the timer, press the timer button. The timer symbol and 0:00 will be lighted on the display. With each press of the button, the time increases. When the time expires, an alarm will sound for two minutes. When the timer is set back to 0:00, the timer symbol will disappear from the display.

Using the Alarm: The alarm in the radio can be used to activate an alarm at a desired time. In order to set the timer, press the DISP button to switch the display to ALARM. Press the alarm button while the alarm symbol is flashing. An A will illuminate in the display. After setting an alarm time the same way as setting a clock, wait until the current time is indicated. Then, press the alarm button. The alarm symbol will appear in the display. Once set, the alarm will sound at the same time each day. In order to make sure of the alarm time, press the display button. In order to disconnect the alarm, press the alarm button again.

Setting the Wake-up Timer: The wake up timer is used to turn the radio on at a specific time without the key in the ignition. Press the DISP button. While the alarm symbol flashes, press the alarm button so that the display shows U. Set the desired time the same way as you set the clock. When the set time comes, the radio is switched on and remains on for one hour. The wake up feature is activated only once and the alarm set status will be returned automatically when one hour is over. To cancel wake-up when it is activated, press the alarm button.

Setting the Tone: Turn the tone knob clockwise in order to emphasize the treble and counterclockwise to emphasize the bass.

Setting the Clock: Press and hold down the AM/FM button. Press the downward arrow button in order to advance the hours. Press upward arrow button in order to advance the minutes.

Playing a Cassette Tape

The tape player is built to work best with tapes that are 30 to 45 minutes long on each side. Tapes longer than that are so thin they may not work well in this player.

Once the tape is playing, use the knobs for volume, tone and balance, just as you do for radio operation.

FF/Rew Buttons: Press the button with the arrows in the same direction of tape play (as indicated on the display) in order to rapidly advance the tape. Press the other button in order to rewind the tape. In order to stop fast forwarding or rewinding, press the other button lightly. Press both fast forward buttons at the same time in order to switch the tape sides. An arrow will light on the display in order to indicate the tape playing direction.

Eject Button: Press this button in order to remove the tape or stop the tape and play the radio.