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 1325 (ENTERTAINMENT SYSTEM)REPAIR INSTRUCTIONSANTENNA 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 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Install the coaxial antenna cables into the vehicle.
Use electrical tape in order to secure the antenna extension cable to the top of the wiring harness. Secure the cable to the harness at least every 150 mm (6 in).

Fig 1: Extension Cable And Antenna Cable

Courtesy of GENERAL MOTORS CORP.

Connect the antenna extension lead (1) to the coaxial antenna cable (2).

Fig 2: Removing/Installing Radio Antenna

Courtesy of GENERAL MOTORS CORP.

Connect the coaxial cable to the radio antenna and to the rear window defog control module.
Install the rear quarter upper trim panel. Refer to Trim Panel Replacement - Rear Quarter Upper in Interior Trim.
Reposition the carpet to cover the main body wiring harness and the coaxial cable.
Install the center pillar lower trim panel. Refer to Trim Panel Replacement - Lower Center Pillar in Interior Trim.

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.