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 MANUALSCHEVROLET2003MALIBU V6-3.1L VIN JREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINEOIL PUMP, ENGINE
2003 Chevrolet Malibu V6-3.1L VIN J
Oil Pump, Engine
2003 Chevrolet Malibu V6-3.1L VIN JSECTION Oil Pump, Engine
OIL PUMP
Gear Lash 0.094 - 0.195 mm (0.0037 - 0.0077 inch)
Gear Pocket Depth 30.52 - 30.58 mm (1.202 - 1.204 inch)
Gear Pocket Diameter 38.176 - 38.226 mm (1.503 - 1.505 inch)
OIL PUMP GEAR
Length 30.45 - 30.48 mm (1.199 - 1.200 in)
Diameter 38.05 - 38.10 mm (1.498 - 1.500 inch)
Side Clearance 0.038 - 0.088 mm (0.001 - 0.003 inch)
End Clearance 0.040 - 0.125 mm (0.002 - 0.005 inch)
Valve to Bore Clearance 0.038 - 0.089 mm (0.0015 - 0.0035 inch)
Oil Pump Mounting Bolt 41 Nm (80 ft. lbs.)
Gear Lash 0.094 - 0.195 mm (0.0037 - 0.0077 inch)
Gear Pocket Depth 30.52 - 30.58 mm (1.202 - 1.204 inch)
Gear Pocket Diameter 38.176 - 38.226 mm (1.503 - 1.505 inch)
OIL PUMP GEAR
Length 30.45 - 30.48 mm (1.199 - 1.200 in)
Diameter 38.05 - 38.10 mm (1.498 - 1.500 inch)
Side Clearance 0.038 - 0.088 mm (0.001 - 0.003 inch)
End Clearance 0.040 - 0.125 mm (0.002 - 0.005 inch)
Valve to Bore Clearance 0.038 - 0.089 mm (0.0015 - 0.0035 inch)
Oil Pump Mounting Bolt 41 Nm (80 ft. lbs.)
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.