Factory build sheet
2011 GMC Sierra SLT
Build 1GT221E8-B · 6.6L 8cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1GT221E8 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 1GT221E8 and carries B in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 24 of them.
- Decoded Jul 7, 2026
- 24 known VINs
This configuration is identical to 2011 GMC Sierra SLT 6.6L 8cyl Pickup (116 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
- Cab type
- Extra/Super/Quad/Double/King/Extended
- 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.
The same build, other model years
GMC used the VIN pattern 1GT221E8 for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
-
2011 You are here code B
- 2012 SLT 6.6L 8cyl Pickup · 21 vehicles code C
- 2013 SLT 6.6L 8cyl Pickup · 35 vehicles code D
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 | 221E8 | 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 |
24 vehicles carry this build
Every VIN we have decoded to 1GT221E8-B shares the specification above.
- 24 Known VINs
- 1GT221E8 8BZ169558
- 1GT221E8 7BZ246436
- 1GT221E8 3BZ257899
- 1GT221E8 3BZ222604
- 1GT221E8 3BZ288943
- 1GT221E8 3BZ312156
- 1GT221E8 7BZ397129
- 1GT221E8 0BZ229252
- 1GT221E8 XBZ252005
- 1GT221E8 2BZ381758
- 1GT221E8 2BZ240236
- 1GT221E8 3BZ167538
- 1GT221E8 8BZ339790
- 1GT221E8 8BZ143848
- 1GT221E8 3BZ339339
- 1GT221E8 2BZ295205
- 1GT221E8 9BZ390988
- 1GT221E8 1BZ371836
- 1GT221E8 4BZ154295
- 1GT221E8 3BZ285542
- 1GT221E8 6BZ285552
- 1GT221E8 2BZ222593
- 1GT221E8 3BZ144700
- 1GT221E8 7BZ144652
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 24 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.