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
Delayed Locking
Continue with the following steps in order to personalize the delayed locking feature:
- Press and hold the driver side power door unlock switch.
- Shift the transmission out of PARK and then back into PARK. The chime will sound a number of times equivalent to the mode number.
- Cycle the transmission again in order to advance to the next mode. Again the chime will sound a number of times equivalent to the mode number.
- Continue to cycle the transmission until the desired mode is reached.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.