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 151 (ENGINE CONTROL SYSTEM & ENGINE COMPONENT TESTS - 2.2L)FUEL SYSTEMSFUEL SYSTEM CLEANINGINSTALLATION PROCEDURES
1999 GMC Forward Control 5.7 R, Automatic
Installation Procedures
1999 GMC Forward Control 5.7 R, AutomaticSECTION Installation Procedures
WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- Install new strainer, if necessary, on fuel sender assembly.
- Install fuel sender assembly with a new seal into the fuel tank.
- Install fuel tank.
- Install pickup box.
- Disconnect fuel feed line at the front of the vehicle.
- Connect a hose to the fuel feed line at the front of the vehicle.
- Insert end of hose into a one gallon fuel can.
- Connect negative battery cable.
- Fill 6 gallons of clean fuel into fuel tank.
- Using scan tool, energize fuel pump until 1/2 gallon of fuel flows into the fuel can. This will purge the fuel pump.
- Install fuel line at the front of the vehicle.
- Inspect for leaks through the following steps: Turn ignition on for 2 seconds, turn ignition off for 10 seconds, then turn ignition on. Inspect for fuel leaks.
NOTE:
Do not fold or twist strainer when installing the sending unit. This action restricts fuel flow.
RENDER: 1.0x
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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.