2003 Hummer H2FACTORY OEM SERVICE PROCEDURE

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the SGCM cooling fan (3) to the SGCM radiator (2).
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the bolts (4) to the SGCM cooling fan (3).

    Tighten:  Tighten the bolts to 6 N.m (53 lb in).

    3. Fig 1: View Of SGCM Cooling Fan, Radiator & Bolts
    GM1310028Courtesy of GENERAL MOTORS CORP.
  3. Install the SGCM radiator (5) to the radiator core support (4).
  4. Install the bolts (1) to the SGCM radiator (5).

    Tighten:  Tighten the bolts to 9 N.m (80 lb in).

    5. Fig 2: View Of SGCM Radiator, Core Support & Bolts
    GM1206686Courtesy of GENERAL MOTORS CORP.
  5. Connect the electrical connector to the SGCM cooling fan.
  6. Install the ambient air temperature sensor (2) to the SGCM radiator bracket (3).
    7. Fig 3: View Of Ambient Air Temperature Sensor & SGCM Radiator Bracket
    GM1285622Courtesy of GENERAL MOTORS CORP.
  7. Install the SGCM radiator outlet hose (1) to the SGCM radiator (2). Refer to Coolant Pipe Quick Connect Fitting - Starter/Generator Control Module .
    8. Fig 4: View Of SGCM Radiator Outlet Hose & SGCM Radiator
    GM1206689Courtesy of GENERAL MOTORS CORP.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.