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 231 (ENGINE CONTROLS - REMOVAL & INSTALLATION)FUEL SYSTEMSFUEL TANKREMOVAL
1999 GMC Forward Control 5.7 R, Automatic
Fuel Tank: Removal
1999 GMC Forward Control 5.7 R, AutomaticSECTION Removal
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.
- Release fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . Drain the fuel tank. See FUEL TANK DRAINING . Raise and support vehicle.
- Disconnect the fuel tank wiring harness connector at the body pass through. See Fig 1 . Disconnect the quick-connect fittings at the fuel filter. SeeFigure . See FUEL LINE DISCONNECT FITTINGS .
- Disconnect the fuel tank EVAP pipe quick-connect fitting near the fuel filter. Remove the fuel feed, the fuel return, and the EVAP lines from the fuel pipe retainer. Remove the retaining nut for the EVAP canister bracket. Loosen the fuel tank filler pipe hose clamp at the fuel tank.
- Disconnect the fuel tank filler pipe from the fuel tank. Do not bend the fuel tank straps. Bending the fuel tank straps may damage the straps. With the aid of an assistant, support the fuel tank and remove the fuel tank strap attaching bolts. Remove the fuel tank from the vehicle.
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.