Factory build sheet
2011 GMC Sierra SLE
Build 1GT020C8-B · 6.6L 8cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1GT020C8 and position 10 reads B. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GT020C8 and carries B in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 20 of them.
- Decoded Jul 7, 2026
- 20 known VINs
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
- 6.6 L
- Cylinders
- 8
- Configuration
- V-Shaped
- Engine model
- LML
- Engine manufacturer
- DURAMAX
- Turbocharged
- Yes
- Fuel type
- Diesel
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Doors
- 2
- Series
- 2500
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 2H
- GVWR
- 9,001–10,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
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 | 020C8 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | B | Model year — 2011 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
20 vehicles carry this build
Every VIN we have decoded to 1GT020C8-B shares the specification above.
- 20 Known VINs
- 1GT020C8 8BF172594
- 1GT020C8 1BF199930
- 1GT020C8 7BZ405136
- 1GT020C8 5BF107816
- 1GT020C8 XBF107181
- 1GT020C8 6BF107663
- 1GT020C8 9BF112873
- 1GT020C8 XBF191969
- 1GT020C8 XBF145445
- 1GT020C8 XBF130539
- 1GT020C8 1BF208593
- 1GT020C8 4BZ408592
- 1GT020C8 XBF208947
- 1GT020C8 XBF152623
- 1GT020C8 XBF106015
- 1GT020C8 1BF104217
- 1GT020C8 9BF171695
- 1GT020C8 8BF161420
- 1GT020C8 6BF205933
- 1GT020C8 1BF116108
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 20 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.