Buick Century (Door Key) 1997-2005 Key Codes

Common questions

What key code series does the Buick Century (Door Key) 1997-2005 use?

The Buick Century (Door Key) 1997-2005 uses key code series AA, with 73,177 documented codes ranging from AA00-7T51, S000A-S999K.

Can the Buick Century (Door Key) 1997-2005 lock be decoded?

Yes. A Lishi-style 2-in-1 decoder reads the door or ignition lock without disassembly, revealing the bitting code that can be cross-referenced against this series' key code database. The specific Lishi tool match for this vehicle is available to signed-in locksmiths.

How many cuts does a Buick Century (Door Key) 1997-2005 key have?

10 cuts on a double-sided profile. Each cut position has a depth value documented in the bitting code, which determines the key cutting pattern.

When was the Buick Century (Door Key) 1997-2005 key data last verified?

Bitting data for the Buick Century (Door Key) 1997-2005 was last verified May 11, 2026. Verification timestamps are tracked per series, and updates appear here as locksmiths confirm code accuracy in the field.