1993 Buick Roadmaster Owner's Manual - Page 150

Step 4. Press the AM-FM button. The radio will display "000". Step 5. Enter the second three digits of the code. The display shows the numbers entered. as Step 6. Press the AM-FM button. If the display shows the disabling sequence was successful. (The or numbers .matched the user-selected code the factory unit back-up code) and the is in theUNSECURED. mode. If the display shows "SEC", the disabling sequence was unsuccessful and the numbers did not match eitherof the codes and the unit will remain the in SECURED mode. C-areof Your Cassette Tape Player A tape player thatis not cleaned regularly can cause reduced sound quality, ruined cassettes, or a damaged mechanism. Cassette -tapes should be stored in. their cases away from contaminants, direct sunlight, and extreme heat.If they aren't, they may not operate of properly or cause failure the tape player. I Your tape player should be cleaned regularly each 15 a month or after every hours of use. If you notice reduction in sound quality, try a known good cassette to is see if the tapeor the tape player at fault..Ethis other