Factory build sheet
2021 GMC Sierra Fleet/Base
Build 1GT09LE7-M · 6.6L 8cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1GT09LE7 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GT09LE7 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 36 of them.
- Decoded Jul 7, 2026
- 36 known VINs
This configuration is identical to 2021 GMC Sierra Fleet/Base 6.6L 8cyl Pickup (133 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
- Engine model
- L8T - SIDI, VVT, CAST IRON
- Fuel type
- Gasoline
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.
The same build, other model years
GMC used the VIN pattern 1GT09LE7 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 | 09LE7 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
36 vehicles carry this build
Every VIN we have decoded to 1GT09LE7-M shares the specification above.
- 36 Known VINs
- 1GT09LE7 9MF242527
- 1GT09LE7 0MF242027
- 1GT09LE7 1MF195686
- 1GT09LE7 9MF203906
- 1GT09LE7 7MF246687
- 1GT09LE7 5MF279221
- 1GT09LE7 XMF285399
- 1GT09LE7 8MF208210
- 1GT09LE7 5MF279896
- 1GT09LE7 2MF168142
- 1GT09LE7 0MF200764
- 1GT09LE7 9MF309742
- 1GT09LE7 0MF212168
- 1GT09LE7 XMF198375
- 1GT09LE7 1MF242246
- 1GT09LE7 2MF208560
- 1GT09LE7 8MF242079
- 1GT09LE7 8MF224570
- 1GT09LE7 3MF202282
- 1GT09LE7 1MF202295
- 1GT09LE7 8MF210572
- 1GT09LE7 8MF202004
- 1GT09LE7 1MF285663
- 1GT09LE7 7MF147318
- 1GT09LE7 5MF212232
- 1GT09LE7 3MF224461
- 1GT09LE7 3MF241860
- 1GT09LE7 8MF213178
- 1GT09LE7 1MF102892
- 1GT09LE7 9MF242415
- 1GT09LE7 0MF213482
- 1GT09LE7 2MF269472
- 1GT09LE7 5MF306899
- 1GT09LE7 9MF285068
- 1GT09LE7 1MF200739
- 1GT09LE7 5MF224218
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 36 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.