1998 GMC Sonoma Owner's Manual - Page 140

Playing a Cassette Tape Your 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 playing, use the knobs VOLUME, BAL is for FADE, BASS and TFEB just as you do for the radio. AM-FM Stereo with Cassette Tape and Automatic Tone Control (If Equipped) REV: Press the SEEK left arrow reverse the cassette tape. to Press the SEEK right arrow to stop reversing the tape. FWD: Press the SEEK right arrow to advance the cassette tape. Press the SEEK left arrow to stop forwarding the tape. RECALL: Press this knob to switch tape sides. EJECT Press this button to remove the tape or stop the tape and play the radio. CLN: If this message appears on the display, the cassette tape player needs to be cleaned. It will still play tapes, but you should clean it as soon as possible to prevent damage to the tapes and player. See "Care of Your Cassette Tape Player" in the Index. After you clean the player, press and hold EJECT for five seconds to reset the CLN indicator. The radio will display --- to show the indicator was reset. Playing the Radio PWR-VOL: Press this knob to turn the system on and off. To increase volume, turn the knob to the right. Turn it to the left to decrease volume. The knob is capable of being rotated continuously. RECALL: Display the time with the ignition off by pressing this button. When the radio is playing, press this button to recall the station frequency. 3-10