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 MANUALSBUICK1998LESABRE V6-3.8L VIN KREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINEENGINE LUBRICATIONOIL PUMPSERVICE AND REPAIR
1998 Buick LeSabre V6-3.8L VIN K
Oil Pump: Service and Repair
1998 Buick LeSabre V6-3.8L VIN KSECTION Service and Repair
REMOVAL PROCEDURE
1. Remove the front cover.
2. Remove the oil filter adapter.
3. Remove the pressure relief valve and spring.
4. Remove the oil pump cover screws.
5. Remove the oil pump cover.
6. Remove the oil pump gears.
INSTALLATION PROCEDURE
1. Lubricate the gears with petroleum jelly.
2. Install oil pump gears.
3. Pack the cavity with petroleum jelly.
4. Install oil pump cover.
5. Install oil pump cover screws.
^ Tighten the screws to 11 Nm (98 inch lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
6. Install oil filter adapter.
7. Install front cover.
1. Remove the front cover.
2. Remove the oil filter adapter.
3. Remove the pressure relief valve and spring.
4. Remove the oil pump cover screws.
5. Remove the oil pump cover.
6. Remove the oil pump gears.
INSTALLATION PROCEDURE
1. Lubricate the gears with petroleum jelly.
2. Install oil pump gears.
3. Pack the cavity with petroleum jelly.
4. Install oil pump cover.
5. Install oil pump cover screws.
^ Tighten the screws to 11 Nm (98 inch lbs.).
NOTICE: Refer to Fastener Notice in Service Precautions.
6. Install oil filter adapter.
7. Install front cover.
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.