Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPONTIAC1987GRAND AM L4-151 2.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSO2 SENSOR - BOSCH DESIGN
1987 Pontiac Grand AM L4-151 2.5L
O2 Sensor - Bosch Design
1987 Pontiac Grand AM L4-151 2.5LSECTION O2 Sensor - Bosch Design
Number 87-6(Gasoline)-20 Date 2/87
Subject:
BOSCH O2 SENSOR
1987 GRAND AM MODELS WITH 2.5L L4 ENGINES (VIN CODE U) AND 5 SPEED MANUAL TRANSMISSION
The 1987 Grand Am models with 2.5L L4 engines and 5 speed manual transmission use a Bosch Oxygen Sensor, service part number 10042186, available from General Motors Service Parts Operation.
Always replace the original Bosch part with the Bosch service part -- under no circumstances substitute with an AC Oxygen Sensor.
Subject:
BOSCH O2 SENSOR
1987 GRAND AM MODELS WITH 2.5L L4 ENGINES (VIN CODE U) AND 5 SPEED MANUAL TRANSMISSION
The 1987 Grand Am models with 2.5L L4 engines and 5 speed manual transmission use a Bosch Oxygen Sensor, service part number 10042186, available from General Motors Service Parts Operation.
Always replace the original Bosch part with the Bosch service part -- under no circumstances substitute with an AC Oxygen Sensor.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.