1GCChevrolet trucks
Held by General Motors LLC · registered in the United States
WMI 1GC shares most of its model list with one other code. Its rules place assembly in three countries. The same rules start at model year 1981 and have no end year. Its rules name 13 percent of the 313 models found under all 108 codes of General Motors.
Models in the decoding rules, by model year
- Aluminum Tilt1981–1988
- Blazer1981–2001
- Bus Chassis1981–1988
- C/K Pickup1981–1986
- C51981–1993
- C61981–1993
- C71981–1993
- El Camino1981–1984
- Forward Control1981–1988
- G-Series1981–1996
- Heavy Conventional1981–1988
- P - Series1981–1994
- Suburban1981–2002
- S-10 Pickup1982–2005
- Military Truck1983–1987
- Astro Van1985–2005
- GMT-4001987–2000
- R Conventional1987–1991
- V Conventional1987–1991
- S61989–1991
- Cutaway Chassis1990–1993
- Lumina APV1990–1996
- Motorhome Chassis1990–1993
- Hi-Cube1992–1994
- B71993
- P6S1993
- S71993
- Tahoe1996–2001
- Express1997–2027
- S-10 Blazer1999–2000
- Silverado1999–2027
- Venture1999–2002
- 3 ton2001–2004
- SSR2003–2006
- Colorado2004–2027
- Avalanche2006
Also in the rules (4 more): Equinox, HHR, Silverado HD, Silverado LTD.
Where the rules place assembly
Plant countriesUnited States, Mexico, Canada
Plant locations namedWentzville; Flint; Arlington; Shreveport; Pontiac; Moraine; Janesville; Fort Wayne; Linden; Roanoke; Detroit; Oklahoma City; Doraville; Lansing and 29 more
Bodies and power
Body classesPickup, Cargo Van, SUV, Incomplete - Cutaway, Van, Step van, Motorhome, Truck-Tractor, Bus, Truck
Primary fuelsGasoline, Diesel, Flexible Fuel Vehicle (FFV), Electric, Liquefied Petroleum Gas (propane or LPG), Compressed Natural Gas (CNG)
Electrified versionsBattery electric, Hybrid, Mild hybrid
Codes with largely the same models
These codes have no page of their own: at least half of the models in their rules also appear under 1GC. The last column counts the shared models.
| Code | Holder | Vehicle type | Model years | Shared models |
|---|---|---|---|---|
| 2GB | General Motors LLC | incomplete vehicles (chassis) | 1981–2019 | 24 of 28 |
Compared with the closest code, 1GB
1GB is held by General Motors LLC. Measured by the overlap of the two model lists, it is the code closest to 1GC apart from those listed above.
Models in both37
Only under 1GCEl Camino, Hi-Cube, SSR
Only under 1GBCutaway Van, D7, P Truck Forward, T-Series, C4, C8, Uplander, Bolt Incomplete, Traverse
Model years1GC: 1981–open · 1GB: 1981–open
Body classes only for 1GCStep van, Motorhome, Bus
Vehicle type1GC: trucks · 1GB: incomplete vehicles (chassis)
Other codes held by General Motors
| Code | Vehicle type | Makes | Model years | Models |
|---|---|---|---|---|
| 1GT | trucks | GMC | 1981–open | 35 |
| 2GC | trucks | Chevrolet | 1981–open | 21 |
| 2GT | trucks | GMC | 1981–2026 | 17 |
| 4GT | trucks | Isuzu | 1992–2010 | 15 |
| 3GC | trucks | Chevrolet | 1981–open | 12 |
| 3GT | trucks | GMC | 1981–open | 9 |
| 1GG | trucks | Isuzu | 1996–2009 | 5 |
| 2G5 | trucks | BrightDrop, Chevrolet | 1981–2025 | 5 |
98 more not shown here. All 108 codes of General Motors
Codes for Chevrolet held by other companies are listed on the page for 1GB.
Source: NHTSA vPIC, October 2026 release (database updated October 17, 2026). How the figures are counted: How the catalog is read.