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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 254 (HYBRID ENGINE ELECTRICAL SYSTEM)REPAIR INSTRUCTIONSBATTERY POSITIVE CABLE REPLACEMENT (CONTROL MODULE TO AUXILIARY BEC)INSTALLATION PROCEDURE
2009 Chevrolet Tahoe Base, 4.8 C

Installation Procedure

2009 Chevrolet Tahoe Base, 4.8 CSECTION Installation Procedure
WARNING: This page is about a different car, the 2010 GMC Yukon, 2010 Chevrolet Tahoe, and 2010 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Positive Battery Cable
    GM1968845Courtesy of GENERAL MOTORS CORP.
  1. Install the positive battery cable (1) to the vehicle.
    2. Fig 2: View Of Positive Battery Cable Clips & Electrical Connectors
    GM1968844Courtesy of GENERAL MOTORS CORP.
  2. Connect the positive battery cable electrical connector (1) to the drive motor generator control module.
  3. Install the positive battery cable clip (5) to the fender inner panel.
  4. Install the positive battery cable clip (4) to the air cleaner support bracket.
  5. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  6. Raise and suitably support the vehicle enough to work through the wheel opening.
  7. Working through the wheel opening, install the positive battery cable clip (3) to air cleaner adapter bracket
  8. Working through the wheel opening, install the positive battery cable clip (2) to the brake pipe.
    9. Fig 3: Locating Positive Battery Cable Components
    GM1968843Courtesy of GENERAL MOTORS CORP.
  9. Install the right wheelhouse panel. Refer to Wheelhouse Panel Replacement - Right Side (HP2) .
  10. Fully raise the vehicle.
  11. Install the positive battery cable clips (2, 3, and 4) to the frame crossmember.
  12. Install the engine shield. Refer to Engine Shield Replacement .
  13. Lower the vehicle.
  14. Install the positive battery cable lead (5) to the mega fuse stud.
    15. CAUTION: Refer to Fastener Caution .
  15. Install the positive battery cable nut (1) to the mega fuse stud and tighten to 9 N.m (80 lb in).
    16. Fig 4: View Of BEC Cover
    GM1968591Courtesy of GENERAL MOTORS CORP.
  16. Install the auxiliary BEC cover (1).
  17. Enable the high voltage system. Refer to High Voltage Enabling .
RENDER: 1.0x

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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.