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Home >> GMC >> 2005 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls - 6.6L (Introduction)) >> Repair Instructions >> Fuel Injection Control Module Replacement >> Removal Procedure

Removal Procedure

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    Fig 1: View Of Fuel Injection Control Module Electrical Connectors
    GM1334881Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
  2. Remove the fuel fill cap in order to relieve the fuel pressure.
  3. Cut the tie strap attaching the harness to the bracket.
  4. Disconnect the fuel injection control module (FICM) electrical connectors.

    Pull the retainers out until the connectors disengage.

    5. Fig 2: View Of Cooling Hoses, Eye Bolts & Washers
    GM1334883Courtesy of GENERAL MOTORS CORP.
  5. Remove and discard the fuel line eye bolts.
  6. Remove and discard the fuel line eye bolt washers from the banjo fittings.
    7. Fig 3: View Of Fuel Injection Control Module Bolts
    GM1334885Courtesy of GENERAL MOTORS CORP.
  7. Remove the FICM bolts.
  8. Remove the FICM with insulators.
    9. Fig 4: View Of Oil Level Indicator
    GM1334847Courtesy of GENERAL MOTORS CORP.
  9. If necessary, remove the oil level indicator tube bracket bolt from the FICM bracket.
  10. If necessary, remove the fuel line and engine harness clips from the FICM bracket.
    11. Fig 5: View Of Fuel Injection Control Module Bracket
    GM1334906Courtesy of GENERAL MOTORS CORP.
  11. If necessary, remove the FICM bracket bolts.
  12. If necessary, remove the FICM bracket.
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