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 160 (ENGINE CONTROLS - REMOVAL & INSTALLATION)FUEL SYSTEMS (GASOLINE)FUEL TANK DRAINING
1999 GMC Forward Control 5.7 R, Automatic
Fuel Tank Draining
1999 GMC Forward Control 5.7 R, AutomaticSECTION Fuel Tank Draining
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Never drain or store fuel in an open container. Always use an approved fuel storage container to reduce the chance of fire or explosion. Place a dry chemical (Class B) fire extinguisher nearby before performing any on-vehicle service procedures. Failure to follow these precautions may result in personal injury.
- Remove the fuel filler cap.
- Install Fuel Flapper Door Holder (J-42960-2) into the fuel fill pipe to hold the fill door open.
- Insert Fuel Drain Hose (J-42960-1) into the fuel tank until the hose reaches the bottom of the fuel tank.
- Use an air operated pump device to drain as much fuel through the fuel fill pipe as possible.
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.