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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1000 (BATTERY, CHARGING SYSTEM & STARTING SYSTEM)REPAIR INSTRUCTIONSHYBRID CONTROL MODULE (HCM) REPLACEMENT (5.3L ENGINE W/RPO HP2)INSTALLATION PROCEDURE
2004 Oldsmobile Bravada AWD

Installation Procedure

2004 Oldsmobile Bravada AWDSECTION 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.
    Fig 1: View Of HCM Bracket (5.3L Engine w/RPO HP2)
    GM1237051Courtesy of GENERAL MOTORS CORP.
  1. Install the HCM to the bracket.
  2. Install the HCM bracket (5) to the fan shroud.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the HCM bracket bolts (3, 4).

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

    4. Fig 2: View Of HCM Bracket & Bolts (5.3L Engine w/RPO HP2)
    GM1206683Courtesy of GENERAL MOTORS CORP.
  4. Install the radiator hose to the clip.
  5. Close the hose clamp on top of the fan shroud.
  6. Connect the HCM electrical connector.
    1. Install the electrical connector.
    2. Slide the gray lever rearward completely until it locks.
    7. Fig 3: View Of Hybrid Control Module Electrical Connector (5.3L Engine w/RPO HP2)
    GM1237059Courtesy of GENERAL MOTORS CORP.
  7. Connect the ESB. Refer to Energy Storage Box (ESB) Service Disconnect/Connect (5.3L Engine w/RPO HP2) .
  8. Program the HCM. Refer to Service Programming System (SPS) in Vehicle Control Systems.
RENDER: 1.0x

NO RELATED

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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.