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 MANUALSBUICK1991CENTURY L4-151 2.5L VIN R TBIREPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYKEYLESS ENTRY TRANSMITTERSERVICE AND REPAIRCODING THE TRANSMITTER(S)SEDAN
1991 Buick Century L4-151 2.5L VIN R TBI
Sedan
1991 Buick Century L4-151 2.5L VIN R TBISECTION Sedan
Remote Door Lock Receiver Installation:
1. Access to the remote entry connector (green connector) is made by moving the carpeting at the driver's side rear wheelhouse, see image view A.
2. Use a screwdriver to connect the two terminals in this connector. The vehicle's door locks will lock and unlock and the compartment lid or liftgate release solenoid will actuate. Leave the screwdriver in place until the programming is completed. Wait for the compartment lid or liftgate solenoid to actuate before proceeding.
3. Push any button on the first transmitter (once and only once). The door locks will lock and unlock again and the compartment lid or liftgate solenoid will actuate. Wait for the compartment lid or liftgate solenoid to actuate before proceeding.
4. Push any button on the second transmitter (once and only once). The door locks will lock and unlock again and the compartment lid 6r liftgate solenoid will actuate. Wait for the compartment lid or lift gate solenoid to actuate before proceeding.
5. Remove the screwdriver from the green connector.
Important
^ Pushing more than one button in step 4 or pushing any button twice in step 4 will result in not being able to program a second transmitter.
^ Failing to wait for the compartment lid or liftgate solenoid to actuate before proceeding with the next step will result in one or both of the transmitters not being programmed.
^ If at any time it is necessary to restart the procedure remove the screwdriver and reinsert it. The locks will lock and unlock again and the compartment lid or liftgate solenoid will actuate. Proceed again with step 4.
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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.