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Fuel Pump Replacement on a 2000 GMC Yukon

The GMC Yukon is a full-size SUV very similar to the Chevrolet Tahoe. The Yukon XL has a longer wheelbase than the base model, and the Yukon Denali is a luxury version of the Yukon. The most common engine in the 2000 GMC Yukon is an 8-cylinder 5.3-liter engine that uses sequential fuel injection. All versions of this vehicle have an electric fuel pump that supplies fuel to the fuel injection under high pressure.

Instructions

1

Disconnect the cable on the negative terminal of the battery with a socket wrench. Remove the filler cap on the fuel tank, and wrap a shop towel around the fuel pressure fitting on the inlet fuel pipe of the fuel injectors. Connect a fuel pressure gauge to the fuel pressure fitting. Place the hose for the fuel pressure gauge into a gasoline container, and open the valve on the gauge. Drain and disconnect the fuel tank. Disconnect the fuel pressure gauge from the inlet fuel pipe.

2

Remove the retaining ring for the fuel sender assembly with a fuel tank sending unit wrench. Disconnect the fuel sender assembly and discard the gasket. Hold the main body of the fuel sender assembly, and disconnect the fuel strainer from the fuel-sending assembly. Discard the fuel strainer.

3

Clean the surface of the fuel tank around the mounting area for the fuel-sending assembly. Disconnect the electrical connections to the fuel pump. Unfasten the retaining clip for the fuel level sensors electrical connector, and disconnect the fuel level sensors electrical connector. Loosen the retaining clip for the fuel level sensor and remove the fuel level sensor. Disconnect the fuel pressure sensor.

4

Attach the fuel pressure sensor, fuel level sensor and electrical connector for the fuel level sensor to the new fuel-sending assembly. Connect the electrical connector to the new fuel pump. Position the new fuel pump strainer to the new fuel-sending assembly so that it will be horizontal when you install the fuel-sending assembly to the fuel tank. Ensure that the fuel pump strainer does not block the movement of the fuel float arm. Push the strainer to seat it on the bottom of the fuel sender.

5

Install a new gasket for the fuel-sending assembly on the fuel tank. Connect the fuel-sending assembly to the fuel tank, and fasten the retaining ring with the fuel tank sending unit wrench. Connect the fuel tank, and use a torque wrench to tighten the bolts for the fuel tank strap to 30 foot pounds. Fill the fuel tank, and replace the filler cap for the fuel tank. Attach the cable for the negative terminal of the battery.

6

Turn the ignition on for 2 seconds and off for 10 seconds to pressurize the fuel system. Start the engine, and check for fuel leaks.

Posted by Unknown at 8:30 AM

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Labels: 2000, a, fuel, gmc, on, pump, replacement, yukon