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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 682 (Battery, Charging System And Starting System - Introduction) >> Repair Instructions >> Hybrid Control Module (HCM) Replacement (5.3L Engine w/RPO HP2) >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the energy storage box (ESB). Refer to Energy Storage Box (ESB) Service Disconnect/Connect (5.3L Engine w/RPO HP2) .
  2. Disconnect the electrical connector from the hybrid control module (HCM).
    1. Push the center retainer in while sliding the gray lever forward.
    2. Slide the gray lever forward completely until it locks.
    3. Remove the electrical connector.
  3. Remove the HCM from the powertrain control module (PCM) cover.
    Fig 1: Removing HCM From PCM Cover
    GM1480466Courtesy of GENERAL MOTORS CORP.
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