LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hummer >> 2010 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Engine Control System & Fuel System - 5.3L - Repair Instructions) >> Repair Instructions >> Engine Control Module Replacement >> Removal Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal Procedure

WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Body Wiring Harness Electrical Connector
    GM1897080Courtesy of GENERAL MOTORS CORP.
  1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  2. Remove the windshield washer solvent container. Refer to Windshield Washer Solvent Container Replacement .
  3. Disengage the integral connector position assurance (CPA) retainer (1) on the body wiring harness electrical connector.
  4. Disconnect the body wiring harness electrical connector (2) from the ECM.
    5. Fig 2: Integral CPA Retainers
    GM1897083Courtesy of GENERAL MOTORS CORP.
  5. Disengage the integral CPA retainers on the engine wiring harness electrical connectors.
  6. Disconnect the engine wiring harness electrical connectors (2) from the ECM.
    7. Fig 3: ECM Bracket Tabs
    GM1897085Courtesy of GENERAL MOTORS CORP.
  7. Lift up the ECM bracket tabs (2) and tilt the ECM (1) towards the front of the vehicle, removing the ECM (1).
scientia non olet · About LEMON Manuals