Every Chevrolet Suburban (2021–2024) carries a 17-character VIN that begins with the 1GN WMI. The Suburban is a gas SUV; this page shows what each character of a Chevrolet Suburban VIN means and gives 4 checksum-valid sample VINs you can drop straight into test fixtures. Synthetic — not real: no scraping, no real-owner data. The generator below is pre-filtered to the Suburban.
Each sample below is built from the real 1GN WMI and the Suburban's descriptor, so it decodes to a Chevrolet Suburban of the right model year:
Have a real Chevrolet Suburban VIN? Decode it →
Worked on the sample 1GNSKMKD2MR686402 — a 2021 Chevrolet Suburban:
| Position | Section | Value | What it tells you |
|---|---|---|---|
| 1–3 | WMI | 1GN | Marks the VIN as Chevrolet, built in United States |
| 4–8 | VDS | SKMKD | Descriptor for the Suburban — SUV body, gas powertrain |
| 9 | Check digit | 2 | Mod-11 checksum over the other 16 characters |
| 10 | Model year | M | Code M = 2021 |
| 11 | Plant | R | Assembly-plant code |
| 12–17 | Serial | 686402 | Sequential production number |
Positions 1–3 of every Chevrolet Suburban VIN read 1GN — the World Manufacturer Identifier that marks the vehicle as Chevrolet, assembled in United States (North America). After the WMI, positions 4–8 (SKMKD in our seed) describe the Suburban itself; see the full 17-digit format.
Position 10 encodes the model year. For the Suburban, 2021 is code M and 2024 is code R. See the 2024 year code or the check-digit math.
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A Chevrolet Suburban VIN is 17 characters starting with the 1GN WMI, for example 1GNSKMKD2MR686402. Positions 4–8 describe the Suburban, position 9 is the check digit, position 10 is the model year, and 12–17 are the serial number.
Read it left to right: 1GN is the Chevrolet WMI, positions 4–8 are the Suburban descriptor, position 9 verifies the VIN via a mod-11 checksum, position 10 gives the year, position 11 the plant, and 12–17 the serial. Paste any VIN into the decoder to do it automatically.
The Suburban in our seed uses the 1GN WMI (United States). Any VIN beginning with 1GN decodes to Chevrolet.
No. They are synthetically generated but checksum-valid, use the real Chevrolet 1GN WMI, and carry the Suburban's descriptor and a valid year code — so a decoder returns a Chevrolet Suburban. No real vehicle's VIN is used.