Factory build sheet
2021 GMC Sierra Fleet/Base
Build 1GD58LE7-M · 6.6L 8cyl · Incomplete - Chassis CAB (Double CAB)
VIN positions 1 through 8 read 1GD58LE7 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 1GD58LE7 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 37 of them.
- Decoded Jul 7, 2026
- 37 known VINs
- 1 listed for sale now
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
- 4x2
- Brake system
- Hydraulic
Body & chassis
- Body class
- Incomplete - Chassis Cab (Double Cab)
- NHTSA body type
- INCOMPLETE VEHICLE
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Series
- 2500
- 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.
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 | 1GD | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | 58LE7 | 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 |
37 vehicles carry this build
Every VIN we have decoded to 1GD58LE7-M shares the specification above.
- 37 Known VINs
- 1 Listed for sale now
- 1GD58LE7 1MF216024
- 1GD58LE7 8MF183684
- 1GD58LE7 0MF236815
- 1GD58LE7 5MF105265
- 1GD58LE7 8MF247593
- 1GD58LE7 0MF222154
- 1GD58LE7 5MF241797
- 1GD58LE7 3MF194835
- 1GD58LE7 7MF254468
- 1GD58LE7 9MF221939
- 1GD58LE7 6MF105730
- 1GD58LE7 6MF236804
- 1GD58LE7 4MF183746
- 1GD58LE7 1MF294187
- 1GD58LE7 6MF104495
- 1GD58LE7 0MF213549
- 1GD58LE7 XMF254707
- 1GD58LE7 0MF260158
- 1GD58LE7 4MF241046
- 1GD58LE7 8MF193423
- 1GD58LE7 7MF252820
- 1GD58LE7 9MF104880
- 1GD58LE7 2MF234306
- 1GD58LE7 8MF254740
- 1GD58LE7 6MF236835
- 1GD58LE7 5MF222361
- 1GD58LE7 8MF260781
- 1GD58LE7 7MF193672
- 1GD58LE7 6MF254722
- 1GD58LE7 8MF213542
- 1GD58LE7 XMF221657
- 1GD58LE7 2MF252160
- 1GD58LE7 XMF215969
- 1GD58LE7 9MF248333
- 1GD58LE7 1MF241327
- 1GD58LE7 3MF221855
- 1GD58LE7 1MF254692
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 37 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.