Factory build sheet
2021 Chevrolet Silverado Trail Boss Custom
Build 1GCRYCEH-M · 4.3L 6cyl · Four-wheel drive · Pickup
VIN positions 1 through 8 read 1GCRYCEH and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Silverado whose VIN starts 1GCRYCEH and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 13 of them.
- Decoded Jul 7, 2026
- 13 known VINs
- 2 listed for sale now
Factory specification
As filed by Chevrolet 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
- 4.3 L
- Cylinders
- 6
- Configuration
- V-Shaped
- Engine model
- LV3
- Valve train
- Overhead Valve (OHV)
- Fuel type
- Gasoline
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Pickup
- NHTSA body type
- TRUCK
- Doors
- 4
- Cab type
- Extra/Super/Quad/Double/King/Extended
- Series
- 1500
- Manufacturer
- GENERAL MOTORS LLC
Weight rating
- GVWR class
- Class 2E
- GVWR
- 6,001–7,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
Driver assistance, as built
- Forward collision warning Optional
- Crash imminent braking Optional
Systems the filing does not record are not listed above. Check the window sticker of the exact car before you rely on any single feature.
The same build, other model years
Chevrolet used the VIN pattern 1GCRYCEH for 3 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 | 1GC | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | RYCEH | 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 |
13 vehicles carry this build
Every VIN we have decoded to 1GCRYCEH-M shares the specification above.
- 13 Known VINs
- 2 Listed for sale now
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 13 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.