GMC Terrain 2018-2021 Key Codes

The GMC Terrain 2018-2021 uses key code series V, with 5,718 documented codes spanning the range V0001-5718. Uses a 10-cut high-security channel-track profile. Set the duplicator to flat-bottom cuts 0.1″ wide. Code is rarely stamped on this style of key; pull it via VIN through the dealer or decode the lock. The lock is decodable with a Lishi tool — sign in for the specific match. Bitting data verified as of May 8, 2026.

Code prefix
V
Code range
V0001-5718
Years
2018-2021
Total codes
5,718
Lishi decodable
Yes — sign in for tool name
Cuts per key
10
Last verified

Common questions

What key code series does the GMC Terrain 2018-2021 use?
The GMC Terrain 2018-2021 uses key code series V, with 5,718 documented codes ranging from V0001-5718.
Can the GMC Terrain 2018-2021 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 Terrain 2018-2021 key have?
10 cuts on a high-security channel-track profile. Each cut position has a depth value documented in the bitting code, which determines the key cutting pattern.
When was the GMC Terrain 2018-2021 key data last verified?
Bitting data for the GMC Terrain 2018-2021 was last verified May 8, 2026. Verification timestamps are tracked per series, and updates appear here as locksmiths confirm code accuracy in the field.

Get the full code list — $9.99/mo, 3-day free trial. Sign in to view bittings, depths, and Lishi cut maps for this series.

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