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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1242 (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 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Important:  When replacing battery cables, always use replacement cables that are the same type, gage and length.

  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE  .
  2. Disconnect the positive battery cable from the battery.
  3. Remove the ground wire bolt from the frame.
    Fig 1: Disconnecting Positive And Negative Battery Cable
    G02084161Courtesy of GENERAL MOTORS CORP.
  4. Remove the remote positive stud cover.
  5. Remove the junction block lead nut from the positive battery cable.
  6. Remove the positive battery cable from the bussed electrical center (BEC).
  7. Remove the BEC from the strut tower.
  8. Unclip and remove the positive battery cable harness from the BEC.
  9. Raise and support the vehicle. Refer to JACKING AND LIFTING in General Information.
  10. Remove the front lower air deflector. Refer to RADIATOR AIR BAFFLE AND DEFLECTOR REPLACEMENT - LOWER in Engine Cooling.
    Fig 2: Removing Positive Battery Cable From Bussed Electrical Center (BEC)
    G02084162Courtesy of GENERAL MOTORS CORP.
  11. Remove the positive battery cable from the starter motor BAT terminal.
  12. Remove the transaxle stud nut.
  13. Remove the ground cable from the transaxle stud.
    Fig 3: Removing Positive Battery Cable From Starter Motor BAT Terminal
    G02084163Courtesy of GENERAL MOTORS CORP.
  14. Unclip and remove the battery cable harness from the retainers.
  15. Remove the battery cable harness from the vehicle.
  16. Remove the positive battery cable from the wiring harness conduit.
    Fig 4: Removing Positive Battery Cable From Wiring Harness Conduit
    G02084164Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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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.