2009 GMC Sierra 1GTEC19X-9 — group 2

17 vehicles sit in group 2 of this build. Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.

What 1GTEC19X-9 means

1GT: the World Manufacturer Identifier GMC registered — assembled in the United States
EC19X: together encode the Sierra line — Pickup, 4.3L 6cyl — as GMC filed it, these five characters are read as one block, not letter by letter
9: in position 10 — model year 2009
9, 11–17: vehicle-specific fields: check digit, plant code and production sequence