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How to Replace the Fuel Pressure Regulator on a 2003 Suburban

The Suburban is a large sport utility vehicle. Chevy began building this popular model in 1935. Suburbans built since 2000 are similar to Chevrolets pickup trucks, except they have a station wagon body. The engine most commonly used in the 2003 Suburban is a 5.3-liter, eight-cylinder engine with sequential fuel injection. This engine requires a fuel pressure regulator to keep the pressure in the fuel lines within the correct range.

Instructions

1

Remove the cable from the negative battery terminal with a socket wrench to ensure that you dont start the engine inadvertently. Loosen the filler cap for the fuel tank to relieve the pressure in the fuel tank.

2

Wrap a shop rag around the fuel pressure fitting on the fuel rail. Attach a fuel pressure gauge to the fitting and place the bleed hose for the pressure gauge into a container approved for storing gasoline. Open the pressure gauge valve and allow the fuel to drain into the container. Detach the fuel pressure gauge from the fuel pressure fitting.

3

Disconnect the bolts on the upper manifold assembly with a socket wrench. Remove the upper manifold from the engine block. Detach the vacuum tube from the fuel pressure regulator.

4

Release the snap ring retainer around fuel pressure regulator and remove the fuel pressure regulator assembly from the retainer. Discard the O-rings and fuel filter.

5

Lubricate the new O-rings with engine oil and mount them onto the fuel pressure regulator. Install the fuel pressure regulator into its retainer and engage the snap ring around the fuel pressure regulator.

6

Connect the vacuum tube to the fuel pressure regulator. Attach the upper manifold assembly with the mounting bolts by using a socket wrench. Reconnect the negative battery cable.