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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 319 (HYBRID ENGINE ELECTRICAL SYSTEM)REPAIR INSTRUCTIONSBATTERY NEGATIVE CABLE REPLACEMENTINSTALLATION PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Negative Battery Cable Assembly
    GM1968354Courtesy of GENERAL MOTORS CORP.
  1. Install the negative battery cable assembly (1) to the vehicle and route the cable under the positive battery cable.
    2. Fig 2: View Of Negative Battery Cable Lead, Ground Lead & Bolt
    GM1968351Courtesy of GENERAL MOTORS CORP.
  2. Raise and suitably support the vehicle.
  3. Position the negative battery cable lead (3) behind the engine wiring harness ground lead (2).
  4. Place the engine wiring harness ground lead (2) and the negative battery cable lead (3) to the frame.
  5. Insert the anti-rotation tab on the engine harness ground lead into the hole in the frame.
    6. NOTE: Refer to Fastener Notice .
  6. Install the engine wiring harness ground lead bolt (1) to the frame.

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

  7. Lower the vehicle.
    8. Fig 3: View Of Negative Battery Cable, Ground Terminal Bolt & Ground
    GM1968348Courtesy of GENERAL MOTORS CORP.
  8. Position the engine wiring harness ground lead (2) behind the negative battery cable lead (3).
  9. Place the negative battery cable lead (3) and the engine wiring harness ground lead (2) against the engine block boss.
  10. Install the negative battery cable ground terminal bolt (1) to the engine block boss.

    Tighten:  Tighten the bolt to 50 N.m (37 lb ft).

    11. Fig 4: View Of Negative Battery Cable Clip
    GM1968346Courtesy of GENERAL MOTORS CORP.
  11. Install the negative battery cable clip (1) to the auxiliary BEC.
    12. Fig 5: Locating Battery Current Sensor & Engine Wiring Harness Electrical Connectors
    GM1968344Courtesy of GENERAL MOTORS CORP.
  12. Connect the engine wiring harness electrical connector (1) to the battery current sensor (2).
  13. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
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.