Escalade, Suburban, Tahoe, Yukon, Denali, DenaliXL, YukonXL 1999-2005

Fuel Lift Pump

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Removal & Installation




CAUTION
To reduce the risk of fire and personal injury that may result from a fuel leak, always replace O-ring seals exposed during component services.


CAUTION
Before servicing any electrical component, the ignition key must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Remove negative battery cable(s).
  2.  
  3. Loosen filler cap(s) to relieve tank pressure.
  4.  
  5. Release the fuel pump electrical connector.
  6.  
  7. Clean both fuel line connections and surrounding areas at fuel pump before disconnecting to avoid possible contamination of the fuel system.
  8.  
  9. Remove both fuel lines from fuel pump by loosening the fuel line fittings.
  10.  
  11. Slide fuel pump out of bracket.

    Click image to see an enlarged view

    Fig. Fuel lift pump removal

  12.  

To install:

  1. Position the new pump in the pump bracket.
  2.  
  3. Install both fuel lines on the fuel pump. Use a backup wrench in order to prevent the pump from turning. Tighten the fuel line fittings to 22 ft. lbs. (30 Nm).
  4.  
  5. Connect the fuel pump electrical harness connector.
  6.  
  7. Connect the negative battery cables.
  8.  
  9. Tighten the fuel tank filler cap(s).
  10.  
  11. Bleed the air from the system.
  12.  
  13. Start the engine and check for leaks.
  14.  

 
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