FixVault
Home › Chevrolet › 2004 › Silverado 2500 HD, 2D Pickup, 6.6 2, RWD, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls - 6.6L (LLY) (Introduction) › Repair Instructions › Engine Control Module (ECM) Replacement › Installation Procedure

Installation Procedure

  1. Install the ECM.
    IMPORTANT: The cover must be fully installed prior to the electrical connections being made to ensure the ECM is fully seated in the bracket.
    Fig 1: ECM Cover Retaining Tabs
    GM1334382Courtesy of GENERAL MOTORS CORP.
  2. Install the ECM cover to the bracket.
  3. Engage the ECM cover retaining tabs.
    4. Fig 2: View Of ECM Electrical Connectors
    GM1334384Courtesy of GENERAL MOTORS CORP.
  4. Connect the ECM electrical connectors (2).
  5. Connect 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.
  6. If a NEW ECM was installed, program the ECM. Refer to Service Programming System (SPS) in Programming.
  7. Perform the turbocharger learn procedure. Refer to Turbocharger Learn Procedure .
About FixVault