Factory build sheet
2012 GMC Sierra Work Truck/Fleet/Base
Build 1GTR1TEX-C · 4.3L 6cyl · Pickup
VIN positions 1 through 8 read 1GTR1TEX and position 10 reads C. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GTR1TEX and carries C in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 162 of them.
- Decoded Jul 7, 2026
- 162 known VINs
- 1 listed for sale now
This configuration is identical to 2012 GMC Sierra Work Truck/Fleet/Base 4.3L 6cyl Pickup (716 vehicles). That page carries the full record.
Factory specification
As filed by GMC with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Displacement
- 4.3 L
- Cylinders
- 6
- Configuration
- V-Shaped
- Engine model
- LU3 - 90 Degree engine
- Fuel type
- Gasoline
Drivetrain
- Drive type
- 4x2
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Doors
- 2
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Series
- 1500
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 2E
- GVWR
- 6,001–7,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
The same build, other model years
GMC used the VIN pattern 1GTR1TEX for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | 1GT | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | R1TEX | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | C | Model year — 2012 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
162 vehicles carry this build
Every VIN we have decoded to 1GTR1TEX-C shares the specification above.
- 162 Known VINs
- 1 Listed for sale now
Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.
Neighboring configurations
Other factory configurations of the Sierra, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
Keep going
Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Vehicle counts come from the 162 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.