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 MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 455 (ENGINE MECHANICAL)REPAIR INSTRUCTIONSOFF-VEHICLE REPAIR INSTRUCTIONSOIL PUMP DISASSEMBLE
1999 GMC Forward Control 5.7 R, Automatic
Oil Pump Disassemble
1999 GMC Forward Control 5.7 R, AutomaticSECTION Oil Pump Disassemble
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the oil pump driveshaft and oil pump driveshaft retainer.
Courtesy of GENERAL MOTORS CORP.
Important: DO NOT remove the oil pump screen from the pipe. The pipe and oil pump screen are serviced as a complete assembly.
- Remove the oil pump screen, if necessary.
The oil pump screen has a press fit into the oil pump cover.
- Remove the oil pump cover bolts.
- Remove the oil pump cover.
- Remove the oil pump drive gear and the oil pump driven gear.
- Matchmark the gear teeth for assembly.
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.