Factory build sheet
2011 GMC Sierra Work Truck/Fleet/Base
Build 1GT422C8-B · 6.6L 8cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1GT422C8 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 1GT422C8 and carries B in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 44 of them.
- Decoded Jul 7, 2026
- 44 known VINs
This configuration is identical to 2011 GMC Sierra Work Truck/Fleet/Base 6.6L 8cyl Pickup (60 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
- 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
- 4
- Series
- 3500
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 3
- GVWR
- 10,001–14,000 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 1GT422C8 for 5 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 | 422C8 | 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 |
44 vehicles carry this build
Every VIN we have decoded to 1GT422C8-B shares the specification above.
- 44 Known VINs
- 1GT422C8 3BF238658
- 1GT422C8 7BF140149
- 1GT422C8 4BF224879
- 1GT422C8 2BF149521
- 1GT422C8 4BF196789
- 1GT422C8 4BF200663
- 1GT422C8 1BF230266
- 1GT422C8 4BF156258
- 1GT422C8 5BF191939
- 1GT422C8 8BF161916
- 1GT422C8 3BF113854
- 1GT422C8 5BF241237
- 1GT422C8 8BF247436
- 1GT422C8 2BF231264
- 1GT422C8 5BF225944
- 1GT422C8 4BF238958
- 1GT422C8 2BF144531
- 1GT422C8 1BF142236
- 1GT422C8 8BF226280
- 1GT422C8 5BF177510
- 1GT422C8 8BF204621
- 1GT422C8 0BF150649
- 1GT422C8 4BF179281
- 1GT422C8 XBF142851
- 1GT422C8 3BF256318
- 1GT422C8 5BF165454
- 1GT422C8 0BF156063
- 1GT422C8 8BF186315
- 1GT422C8 7BF174303
- 1GT422C8 3BF178431
- 1GT422C8 3BF238675
- 1GT422C8 4BF240127
- 1GT422C8 2BF203481
- 1GT422C8 8BF244178
- 1GT422C8 1BF182932
- 1GT422C8 7BF203525
- 1GT422C8 XBF253139
- 1GT422C8 7BF229736
- 1GT422C8 2BF250929
- 1GT422C8 8BF169787
- 1GT422C8 XBF210629
- 1GT422C8 7BF166332
- 1GT422C8 2BF181417
- 1GT422C8 8BF256010
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 44 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.