2004 GMC Envoy Owner's Manual - Page 240

PROG (Program): Press this button to play a station you have programmed on the radio preset pushbuttons. The radio will only seek preset stations with a strong signal that are in the selected band. When a CD is playing in the CD changer, press this button to go to the next available CD, if multiple CDs are loaded. Radio Reception AM The range for most AM stations is greater than for FM, especially at night. The longer range can cause station frequencies to interfere with each other. Static can occur on AM stations caused by things like storms and power lines. Try reducing the treble to reduce this noise. Q SOURCE R: Press this button to switch between FM1, FM2, AM, or XM1 or XM2 (if equipped), or a CD. If a CD is loaded the CD symbol will appear on the display. Press the up or the down arrow to go to the next or to the previous radio station and stay there. The radio will only seek stations with a strong signal that are in the selected band. When a CD is playing, press the up or the down arrow to fast forward or reverse. FM Stereo FM stereo will give the best sound, but FM signals will reach only about 10 to 40 miles (16 to 65 km). Tall buildings or hills can interfere with FM signals, causing the sound to fade in and out. Q SEEK R: XM™ Satellite Radio Service XM™ Satellite Radio Service gives digital radio reception from coast to coast. Just as with FM, tall buildings or hills can interfere with satellite radio signals, causing the sound to fade in and out. The radio may display NO SIGNAL to indicate interference. Q VOL R (Volume): Press the up or the down arrow to increase or to decrease the volume. 3-120