2021 GMC Sierra 1GTR8AEF-M — group F

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

What 1GTR8AEF-M means

1GT
the World Manufacturer Identifier GMC registered — assembled in the United States
R8AEF
together encode the Sierra line — Pickup, 5.3L 8cyl — as GMC filed it, these five characters are read as one block, not letter by letter
M
in position 10 — model year 2021
9, 11–17
differ on every car: check digit, plant code and the serial number

Vehicles in this group

19 vehicles in this group, in fixed VIN order.

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