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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1570 (BATTERY)REPAIR INSTRUCTIONSBATTERY POSITIVE CABLE REPLACEMENT (6.6L ENGINE)INSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION 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 positive cable to the vehicle.
  2. Install the positive cable to the starter.
    NOTE: Refer to FASTENER NOTICE .
  3. Install the starter lead nut.

    Tighten 

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

    Fig 1: Install Starter Lead Nut
    G02109415Courtesy of GENERAL MOTORS CORP.
  4. Install the battery positive cable in the retainer.
  5. Install the positive cable retainer and nut.

    Tighten 

    Tighten the nut to 12 N.m (106 lb in).

    Fig 2: Install Positive Cable Retainer & Nut
    G02109416Courtesy of GENERAL MOTORS CORP.
  6. Install the battery positive cable to the channel.
  7. Install the battery cable channel bolts.

    Tighten 

    Tighten the bolts to 8 N.m (71 lb in).

  8. Lower the vehicle.
  9. Install the negative cable clip to the clip on the positive cable.
    Fig 3: Install Battery Cable & Channel Bolts
    G02109417Courtesy of GENERAL MOTORS CORP.
  10. Install the positive cable (1) into the junction block.
  11. Snap the junction block cover closed.
    Fig 4: Install Positive Cable
    G02109418Courtesy of GENERAL MOTORS CORP.
  12. Tighten the positive cable bolt at the UBEC.

    Tighten 

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

    Fig 5: Tighten Positive Cable Bolt
    G02109419Courtesy of GENERAL MOTORS CORP.
  13. Install the positive battery cable.
  14. Tighten the positive battery cable.

    Tighten 

    Tighten the bolt to 17 N.m (13 lb ft).

  15. Snap the positive battery cable cap closed.
  16. 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 6: Install Positive Battery Cable
    G02109420Courtesy 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.