BOSCH OXYGEN SENSOR ONLY REPLACE WITH BOSCH P/N

MODELS AFFECTED: 1987 SOMERSETS AND SKYLARKS WITH THE L68 2.5L L4 ENGINE (VIN CODE U) AND 5 SPEED MANUAL TRANSMISSION

1987 Somersets and Skylarks with 2.5L L4 engines and 5 speed manual transmissions use a Bosch Oxygen Sensor, Service Part Number 10042186, available from General Motors Service Parts Operations.

Always replace the original Bosch part with the Bosch service part -- under no circumstances substitute with an AC Oxygen Sensor.

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.