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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1187 (BATTERY)REPAIR INSTRUCTIONSBATTERY POSITIVE CABLE REPLACEMENTREMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the battery tray. Refer to BATTERY TRAY REPLACEMENT .
  2. Open the stud cover on the fuse/relay center.
  3. Remove the positive battery cable nut from the fuse/relay center stud.
  4. Remove the positive battery cable lead (2) from the fuse/relay center stud.
    Fig 1: Removing Positive Battery Cable Lead From Fuse/Relay Center Stud
    G01971891Courtesy of GENERAL MOTORS CORP.
  5. Remove the heat shield retainer at the upper plenum.
    Fig 2: Removing Heat Shield Retainer From Upper Plenum
    G01971892Courtesy of GENERAL MOTORS CORP.
  6. Remove the battery heat shield retainer and the battery heat shield.
  7. Remove the right rear spark plug wire.
    Fig 3: Battery Heat Shield Retainer & Battery Heat Shield
    G01971893Courtesy of GENERAL MOTORS CORP.
  8. Remove the battery cable clips.
    Fig 4: Battery Cable Clips
    G01971894Courtesy of GENERAL MOTORS CORP.
  9. Remove the battery cables (1) from the engine wiring harness insulator.
  10. Raise and suitably support the vehicle. Refer to FASTENER NOTICE in General Information.
    Fig 5: Removing Battery Cables From Engine Wiring Harness Insulator
    G01971895Courtesy of GENERAL MOTORS CORP.
  11. Remove the positive battery cable terminal nut and terminals (3, 4) from the starter solenoid.
  12. Lower the vehicle.
  13. Remove the positive battery cable.
    Fig 6: Positive Battery Cable
    G01971896Courtesy 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.