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Home >> GMC >> 2001 >> Sierra 2500 HD, 2D Pickup, 6.6 1, 4WD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 6.6L - Repair Instructions >> Repair Instructions >> Fuel Injector Control Module Replacement >> Removal Procedure

Removal Procedure

    CAUTION:

    Refer to BATTERY DISCONNECT CAUTION in Cautions and Notices.

  1. Disconnect the batteries.
  2. Remove the duct between the air cleaner and the turbocharger inlet housing.
    3. Fig 1: PCV Hose
    GM744239Courtesy of GENERAL MOTORS COMPANY
  3. Remove the clamp (2) from the PCV hose (1) to pipe and move the hose aside.
  4. Remove the fuel filler cap to relieve pressure.
    5. Fig 2: View Of Fuel Injection Control Module Components
    GM660358Courtesy of GENERAL MOTORS COMPANY
  5. Remove the large tie wraps from the fuel injector control module (6) and harness.
  6. Loosen the fuel lines (3) at the fuel injection control module (6).
  7. Remove the 3 mounting bolts (1,5).
  8. Remove the insulators (2) between the fuel injection control module and bracket by lifting up the module and reaching underneath.
    9. Fig 3: View Of Fuel Injection Control Module Electrical Connectors
    GM744247Courtesy of GENERAL MOTORS COMPANY
    IMPORTANT:

    Do not break off the tab on the connector.

  9. Disconnect the wiring harness connectors (2) from the fuel injection control module (1).
    10. Fig 4: View Of Fuel Injection Control Module Fuel Lines
    GM744237Courtesy of GENERAL MOTORS COMPANY
  10. Disconnect the fuel lines (2) at the fuel injection control module (1) and discard washers.
  11. Remove the fuel injection control module (1) from the bracket.
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