2007 GMC Sierra 3GTEC13C-7 — group 1

23 vehicles sit in group 1 of this build. Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.

What 3GTEC13C-7 means

3GT
the World Manufacturer Identifier GMC registered — assembled in Mexico
EC13C
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
7
in position 10 — model year 2007
9, 11–17
vehicle-specific fields: check digit, plant code and production sequence

Vehicles in this group

23 vehicles in this group, in fixed VIN order.

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