Factory build sheet
1981 GMC Sierra Work Truck/Fleet/Base
Build 1GD322C8-D · 6.6L 8cyl · Four-wheel drive · Incomplete - Chassis CAB (Single CAB)
VIN positions 1 through 8 read 1GD322C8 and position 10 reads D. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Sierra whose VIN starts 1GD322C8 and carries D in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 49 of them.
- Decoded Jul 7, 2026
- 49 known VINs
- 2 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
- 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
- Incomplete - Chassis Cab (Single Cab)
- NHTSA body type
- INCOMPLETE VEHICLE
- Doors
- 2
- 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 | 1GD | GENERAL MOTORS LLC · World manufacturer identifier |
| 4–8 | 322C8 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | D | Model year — 1981 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
49 vehicles carry this build
Every VIN we have decoded to 1GD322C8-D shares the specification above.
- 49 Known VINs
- 2 Listed for sale now
- 1GD322C8 7DZ158613
- 1GD322C8 0DF116642
- 1GD322C8 2DF127478
- 1GD322C8 0DF174797
- 1GD322C8 8DF205309
- 1GD322C8 8DF117621
- 1GD322C8 3DF157718
- 1GD322C8 9DF184311
- 1GD322C8 XDF234505
- 1GD322C8 6DF186355
- 1GD322C8 XDF164987
- 1GD322C8 9DF205321
- 1GD322C8 8DF171243
- 1GD322C8 0DF210178
- 1GD322C8 4DF176987
- 1GD322C8 7DF161643
- 1GD322C8 3DF213978
- 1GD322C8 9DF213998
- 1GD322C8 2DF243280
- 1GD322C8 4DF221426
- 1GD322C8 4DF201838
- 1GD322C8 4DF139955
- 1GD322C8 7DF185411
- 1GD322C8 1DF210187
- 1GD322C8 0DF172113
- 1GD322C8 5DF199405
- 1GD322C8 8DF244028
- 1GD322C8 1DF188448
- 1GD322C8 6DF168941
- 1GD322C8 6DF101255
- 1GD322C8 XDF244838
- 1GD322C8 1DF194248
- 1GD322C8 7DF202787
- 1GD322C8 XDF191753
- 1GD322C8 3DF226357
- 1GD322C8 2DF102550
- 1GD322C8 2DF118408
- 1GD322C8 2DF116593
- 1GD322C8 3DF173515
- 1GD322C8 XDF197214
- 1GD322C8 5DF106477
- 1GD322C8 8DF147072
- 1GD322C8 1DF238037
- 1GD322C8 7DF212090
- 1GD322C8 8DF140283
- 1GD322C8 1DF106363
- 1GD322C8 XDF198394
- 1GD322C8 8DF222000
- 1GD322C8 1DF100224
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 49 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.