Question about 1986 Chevrolet C1500

3 Answers

Explain how to change a fuel pump on a 1986 chev 1/2 ton

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  • johnddduncan Aug 23, 2010

    you are talking about the wrong vehicle.

  • johnddduncan Aug 23, 2010

    the fuel pump is on the side of the block. it is a 305 engine 4 wheel drive with 8cylinders.

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If the car it's older then a 1986 Chevrolet C1500 then the fuel pump it is on the passenger side of the engine up towards the front. If it is newer then a 1986 then you can find it in the fuel tank. Will have to remove the fuel tank to get to it. You have to remove the fuel tank to access the pump which sits inside the tank through the top. The tank should be just in front of the rear axle. Be sure to empty the tank or it will be quite heavy to let down once loosened.

Posted on Aug 23, 2010

  • TDISLine
    TDISLine Aug 23, 2010

    Sorry, then you will find two fixing bolts on the pump assembly surface. See picture below:










    Disconnect fuel hoses and remove two fixing bolts of the fuel pump. Replace the fuel pump with new one. Pay attention at pump sealing gasket on the cylinder block. Allways use new gasket!

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Please reply with the engine size and # of cylinders.

Thanks!!

Posted on Aug 23, 2010

  • blueextc3221
    blueextc3221 Aug 23, 2010



    1. With the engine turned OFF, relieve the fuel pressure at the pressure regulator. See Warning above.


    2. Disconnect the negative battery cable.


    3. Raise and support the rear of the vehicle on jackstands.


    4. Drain the fuel tank, then remove it.


    5. 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.



    6. 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.



    7. To install, reverse the removal procedures.
    Thanks!!

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Have support under the fuel tank.
remove the strap bolts & nuts from the tanks support brackets
lower the tank somewhat and remove the fuel lines
Having the tank empty will be a big help
Removing the truck bed makes this job easier too
Now remove the tank & take a hammer and a screwdriver knocking the round retaining cam counter clock wise and remove the retaining cam.
now the sending unit with the pump can be taken out
'reverse proceedure to install

Posted on Aug 23, 2010

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Posted on Jan 02, 2017

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