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 683 (KEYLESS ENTRY SYSTEM)COMPONENT LOCATORKEYLESS ENTRY CONNECTOR END VIEWS

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Keyless Entry Connector End Views

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Keyless Entry Connector End Views

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Remote Control Door Lock Receiver (RCDLR) Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12059162 4-Way F Micro-Pack 100 Series (BLU)
Pin	Wire Color	Circuit No.	Function
1	ORN	1140	Battery Positive Voltage
2	ORN	461	GMCM Serial Data
3	-	-	Not Used
4	BLK	1850	Ground

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.