GMC S15 Sonoma 1999-2000 Key Codes

The GMC S15 Sonoma 1999-2000 uses key code series AA, with 73,177 documented codes spanning the range AA00-7T51, S000A-S999K. Uses a 10-cut double-sided profile. Set the duplicator to flat-bottom cuts 0.1″ wide. Code is typically stamped on the original key bow or available via the VIN through the dealer. The lock is decodable with a Lishi tool. Sign in for the specific match. Bitting data verified as of May 8, 2026.

Code prefix
AA
Code range
AA00-7T51, S000A-S999K
Years
1999-2000
Total codes
73,177
Lishi decodable
Yes (sign in for tool name)
Cuts per key
10
Last verified

Common questions

What key code series does the GMC S15 Sonoma 1999-2000 use?
The GMC S15 Sonoma 1999-2000 uses key code series AA, with 73,177 documented codes ranging from AA00-7T51, S000A-S999K.
Can the GMC S15 Sonoma 1999-2000 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 GMC S15 Sonoma 1999-2000 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 GMC S15 Sonoma 1999-2000 key data last verified?
Bitting data for the GMC S15 Sonoma 1999-2000 was last verified May 8, 2026. Verification timestamps are tracked per series, and updates appear here as locksmiths confirm code accuracy in the field.

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