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.

2003 Buick Century BaseFACTORY OEM SERVICE PROCEDURE

Keyless Entry Connector End Views

WARNING: This page is about a different car, the 2004 Buick Regal and 2004 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Remote Control Door Lock Receiver Terminal Identification (RCDLR)

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12064993 6-Way F Micro-Pack 100 Series (BLK)
Pin	Wire Color	Circuit No.	Function
5	ORN	640	Battery Positive Voltage
6	LT GRN	377	Serial Data
7	-	-	Not Used
8	BLK	1550	Ground
9-10	-	-	Not Used

Factory Service Tools

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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.