Engine - Poor Performance/MIL ON/Code 51

SUBJECT: DEALER SERVICE BULLETIN 84-6E-16S DCS NO. 84-24
TO: ALL BUICK DEALERS AND ZONES GROUP NO. 6E
JUNE 29, 1984

ATTENTION: SERVICE MANAGERS BE SURE TO REVIEW THIS INFORMATION WITH SERVICE DEPARTMENT PERSONNEL.

SERVICE PROM #1226923, RELEASED TO CORRECT POOR PERFORMANCE IN 1984 3.8L TURBOCHARGED REGALS, WAS PROGRAMMED INCORRECTLY BY DELCO ELECTRONICS. AS A RESULT, THE PROM WILL NOT WORK IN THE VEHICLE. RESULTS, IF INSTALLED, WILL BE A SOLID "SERVICE ENGINE SOON" LIGHT AND CODE 51. THE VEHICLE WILL RUN IN FUEL BACKUP MODE.

ALL WDDGM STOCK FOR PART #1226923 IS DEFECTIVE AND SHOULD NOT BE ORDERED.

ANOTHER BULLETIN WILL BE RELEASED AS SOON AS NEW PROMS ARE AVAILABLE.