Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1287 (BATTERY)REPAIR INSTRUCTIONSBATTERY POSITIVE CABLE REPLACEMENTINSTALLATION 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 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Removing Positive (+) Battery Cable From Harness Loom

Courtesy of GENERAL MOTORS CORP.

Position the positive (+) battery cable (4) into the vehicle.
Route the positive (+) cable into the harness loom.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Connect the cable to the starter solenoid. Secure the cable with the retaining nut.
Tighten

Tighten the positive (+) battery cable-to-starter solenoid retaining nut to 9 N.m (78 lb in).
Install the battery positive fuse block feed cable to positive (+) battery cable. Secure with the nut (5).
Tighten

Tighten the positive (+) battery cable-to-relay block 1 feed cable retaining nut to 9 N.m (78 lb in).
Tape the loom to prevent dirt and moisture from entering the harness.
Install the positive (+) battery cable harness loom to the harness retainers.
Install the plastic insulator to the positive (+) battery cable.
Install the battery to the vehicle. Refer to BATTERY REPLACEMENT .

Fig 2: Installing Positive (+) Battery Cable Harness Loom

Courtesy 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.