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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 621 (BATTERY)REPAIR INSTRUCTIONSBATTERY NEGATIVE CABLE REPLACEMENT (6.6L ENGINE)INSTALLATION PROCEDURE
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Installation Procedure

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Installation Procedure
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the negative battery cable.
  2. Position the negative cable and forward lamp wiring harness ring terminals to the frame.

    Insert the anti-rotation tab on the forward lamp wiring harness into the hole in the frame.

    NOTE: Refer to FASTENER NOTICE .
  3. Install the forward lamp wiring harness ground/negative cable bolt.

    Tighten 

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

    Fig 1: Install Forward Lamp Wiring Harness Ground/Negative Cable Bolt
    G02109365Courtesy of GENERAL MOTORS CORP.
  4. Position the negative cable and engine wiring harness ring terminals to the engine block.

    Position the anti-rotation tab on the negative cable in the correct location.

  5. Install the engine wiring harness ground/negative cable bolt.

    Tighten 

    Tighten the bolt to 34 N.m (25 lb ft).

  6. Lower the vehicle.
  7. Install the negative cable clip to the clip on the positive cable.
  8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery)  or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) .
    Fig 2: Install Engine Wiring Harness Ground/Negative Cable Bolt
    G02109366Courtesy of GENERAL MOTORS CORP.
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.