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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Controls - 6.6L - Introduction (2 Of 2)) >> Repair Instructions >> Engine Control Module (ECM) Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Place the bottom edge of the ECM into the bracket lower retainers.
    Fig 1: Installing ECM Into Bracket
    GM1603136Courtesy of GENERAL MOTORS CORP.
  2. Push the ECM towards the bracket until the upper edge of the ECM snaps into place.
  3. Connect the ECM electrical connectors.
    Fig 2: Connecting ECM Electrical Connectors
    GM1612203Courtesy of GENERAL MOTORS CORP.
  4. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) .
  5. If a NEW ECM was installed, program the ECM. Refer to Control Module References .
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