Formally called the Chevrolet C/K.

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replace fuel pump in 1991 chevy scottsdale

How to replace fuel pump in chevy scottsdale 1991.

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What engine size and I believe that your Scottsdale has TBI fuel injection?

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From the manual:"

With the engine turned OFF , relieve the fuel pressure at the pressure regulator. Refer to the fuel relief procedure in this section.

Disconnect the negative battery cable.

Raise and support the rear of the vehicle on jackstands.

Drain the fuel tank, then remove it.

Using a hammer and a drift punch, drive the fuel lever sending device and pump assembly locking ring (located on top of the fuel tank) counterclockwise. Lift the assembly from the tank and remove the pump from the fuel lever sending device.

Pull the pump up into the attaching hose while pulling it outward away from the bottom support. Be careful not to damage the rubber insulator and strainer during removal. After the pump assembly is clear of the bottom support, pull it out of the rubber connector.

To install:

Connect the fuel pump to the hose.

Install a new O-ring on the pump assembly and then position them into the fuel tank.

Turn the locking ring clockwise until its tight.

Install the fuel tank and connect the battery cable.

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