2011 GMC Sierra 1GT121C8-B — group 4

48 vehicles sit in group 4 of this build. Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.

What 1GT121C8-B means

1GT
the World Manufacturer Identifier GMC registered — assembled in the United States
121C8
together encode the Sierra line — Pickup, 6.6L 8cyl, Four-wheel drive — as GMC filed it, these five characters are read as one block, not letter by letter
B
in position 10 — model year 2011
9, 11–17
vehicle-specific fields: check digit, plant code and production sequence

Vehicles in this group

48 vehicles in this group, in fixed VIN order.

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