2021 GMC Sierra 3GTN8AEF-M — group B
6 vehicles sit in group B of this build. Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.
What 3GTN8AEF-M means
- 3GT
- the World Manufacturer Identifier GMC registered — assembled in Mexico
- N8AEF
- 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
- vehicle-specific fields: check digit, plant code and production sequence
Vehicles in this group
6 vehicles in this group, in fixed VIN order.
