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Home >> GMC >> 2001 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.5L (L65) (Introduction) >> Repair Instructions >> Fuel Solenoid Driver Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Upper Fuel Injection Pump
    GM412009Courtesy of GENERAL MOTORS CORP.
  1. Remove the intake manifold in order to gain access to the fuel solenoid driver. Refer to Intake Manifold Removal- Upper and Intake Manifold Removal - Lower in Engine Mechanical - 6.5L. The fuel solenoid driver is located on the left side of the injection pump.
  2. Scribe a reference mark on the engine front cover and the injection pump housing to assist in correctly locating the injection pump during reassembly.
  3. Loosen the injection pump retaining nuts approximately 1/2 turn, using an J 41711  . See Special Tools . Do not remove the nuts.
  4. Rotate the pump to the passenger side of the vehicle until the pump stops, using an J 29872-A  . See Special Tools .
  5. Retighten the top injection pump retaining nut using J 41711  . See Special Tools .
  6. Fig 2: Fuel Solenoid Driver, Wiring Connector & Heat Transfer Pad
    GM412007Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the fuel solenoid driver wiring connector at the injection pump.
  8. Loosen the four fuel solenoid driver mounting screws until the screws are free from the injection pump.
  9. Discard the heat transfer pad (1) and the mounting screws.
  10. Fig 3: Fuel Solenoid Calibrating Resistor & Pliers
    GM412010Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel solenoid calibrating resistor using a snap ring pliers. The calibrating resistor is located on a small circuit board which is located in the PMD connector housing and is placed over the PMD terminal pins. This calibrating resistor circuit board has two outboard holes (3) which can be grabbed with snap ring pliers.