1997 GMC Suburban Owner's Manual - Page 179

Care of Your Cassette Tape Player A tape player thatis not cleaned regularly can cause reduced sound quality, ruined cassettes ora damaged mechanism. Cassette tapes should be stored in their cases away from contaminants, direct sunlightand extreme heat. If they aren't, they may not operate properly or may cause failureof the tape player. AUX until the tape symbol flashes on the display, then insert the cassette again.For vehicles without Automatic Tone Control, press both SEEK arrows within five seconds of inserting the cassette with the ignition and radio off. Insert the cassette at least three times to ensure thorough cleaning. A scrubbing action cleaning cassette is available through your GM dealership. Your tape player should be cleaned regularly after every 50 hours of use. Your radio may display CLN to indicate that you have used your tape player for 50 hours without resetting the tape clean timer. If this message appears on the display, your 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 your tapes and player. If you notice a reduction in sound quality, try a known good cassette to seeif it is the tape or the tape player at fault.If this other cassettehas no improvement in sound quality, clean the tape player. Cleaning may be done with a scrubbing action, non-abrasive cleaning cassettewith pads which scrub the tape head as the hubs of the cleaner cassetteturn. It is normal for the cassette to eject while cleaning because your unit is equipped with a cut tape feature. To temporarily override this feature for vehicles with Automatic Tone Control (forone insertion), turn on the ignition then turn the radio off and press and hold TAPE You may also choose a non-scrubbing action, wet-type cleaner which uses a cassette with a fabricbelt to clean the tape head. This type of cleaning cassettewill not eject. It may not clean as thoroughly as the scrubbing type cleaner. The cassette tape player is able to detect abroken tape. Some cleaning cassettesmay appear as a broken tape. If the cleaning cassette is ejected immediately from the tape player, follow these steps: 1. Turn the radio off. 2. Turn the ignition on. 3. Press and hold the TAPE-AUX button until the tape symbol flashes. 4. Insert the cleaning cassetteand the radio will turn on in cassette mode. 5. Eject the tape after the tape player has been cleaned. 3-29