For 1990-2009 cars

# MAP AND BARO SENSORS DELCO SERVICE REPLACEMENT

THE MAP AND BARO SENSOR MANUFACTURED BY DELCO CAN BE USED TO REPLACE THE BENDIX MAP AND BARO SENSORS ON 1980 AND 1981 BUICK C.C.C. ENGINES. ON 1980 3.8L CALIFORNIA VEHICLES AND 1980 "B" SERIES WITH 3.8L FEDERAL ENGINE, A MODIFICATION TO THE MAP ELECTRICAL CONNECTORS MUST BE MADE. ON THE 1980 ENGINES THE ELECTRICAL CONNECTIONS TO THE BENDIX MAP SENSOR IS DIFFERENT THAN THE DELCO CONNECTIONS. CHECK THE CONNECTOR WIRING AGAINST THE FOLLOWING CHART. IF IT IS WIRED FOR 1980, REVERSE THE TERMINALS IN CAVITIES "A" AND "B". FOLLOW CONNECTOR REPAIR PROCEDURES IN THE 1981 CHASSIS SERVICE MANUAL. HARNESS CONNECTOR WIRE CIRCUIT CAVITY COLOR USAGE 416C C PURPLE 1980 452J B BLACK BENDIX 432 A BLUE/GRAY STRIPE 416C C PURPLE 1981 432 B BLUE/GRAY DELCO STRIPE 452J A BLACK THE DELCO SENSOR WILL NOT FIT INTO THE BENDIX SENSOR MOUNTING HOLES. A NEW MOUNTING BRACKET MUST BE INSTALLED ON THE WHEELHOUSE PANEL. THE PART NUMBER FOR THIS BRACKET IS 22506648. LOCATE THIS BRACKET SO THAT THE HARNESS CONNECTOR WILL EASILY REACH. SEE FIGURE 1. IF A BENDIX SENSOR NEEDS TO BE REPLACED WITH A DELCO SENSOR, MIXING THE DIFFERENT MANUFACTURERS WILL HAVE NO ADVERSE AFFECT ON THE ENGINES PERFORMANCE.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.