Factory build sheet
2018 Chevrolet Silverado Work Truck/LS/Fleet/Base
Build 1GB4KYEY-J · 6.6L 8cyl · Four-wheel drive · Incomplete - Chassis CAB (Double CAB)
VIN positions 1 through 8 read 1GB4KYEY and position 10 reads J. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Silverado whose VIN starts 1GB4KYEY and carries J in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 5 of them.
- Decoded Jul 7, 2026
- 5 known VINs
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
- 6.6 L
- Cylinders
- 8
- Configuration
- V-Shaped
- Engine model
- L5P - Direct Injection, DURAMAX, GEN 5, VAR 1
- Turbocharged
- Yes
- Fuel type
- Diesel
Drivetrain
- Drive type
- Four-wheel drive
- Brake system
- Hydraulic
Body & chassis
- Body class
- Incomplete - Chassis Cab (Double Cab)
- NHTSA body type
- INCOMPLETE VEHICLE
- Doors
- 4
- Cab type
- Crew/Super Crew/Crew Max
- 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.
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 | 1GB | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | 4KYEY | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | J | Model year — 2018 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
5 vehicles carry this build
Every VIN we have decoded to 1GB4KYEY-J shares the specification above.
- 5 Known VINs
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 5 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.