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1GTGMC trucks

Held by General Motors LLC · registered in the United States

WMI 1GT 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 11 percent of the 313 models found under all 108 codes of General Motors.

Models in the decoding rules, by model year

  1. Aluminum Tilt1981–1988
  2. Bus Chassis1981–1988
  3. C/K Pickup1981–1986
  4. C51981–1989
  5. C61981–1989
  6. C71981–1989
  7. Caballero1981–1984
  8. Forward Control1981–1988
  9. Heavy Conventional1981–1988
  10. Hi-Cube1981–1994
  11. Jimmy Utility1981–1998
  12. Motorhome Chassis1981–1988
  13. S15 Utility1981–1994
  14. Suburban1981–1999
  15. Value Van1981–1993
  16. Vandura1981–1996
  17. S15 Pickup1982–1990
  18. Safari1985–2005
  19. GMT-4001987–1988
  20. Jimmy1987–1991
  21. R Conventional1987–1991
  22. V Conventional1987–1991
  23. S61989
  24. Sierra1989–2027
  25. Magna Van1990–1993
  26. Sonoma1991–2004
  27. Yukon XL1995–2011
  28. Savana1996–2027
  29. Canyon2004–2027
  30. Acadia2010–2011
  31. Terrain2010–2011
  32. Yukon2010–2011
  33. Sierra HD2019–2027
  34. Hummer EV Pickup2022–2027
  35. Sierra Limited2022

Where the rules place assembly

Plant countriesUnited States, Mexico, Canada

Plant locations namedWentzville; Flint; Arlington; Shreveport; Pontiac; Moraine; Janesville; Fort Wayne; Linden; Detroit; Roanoke; Oklahoma City; Doraville; Lansing and 29 more

Bodies and power

Body classesPickup, Cargo Van, SUV, Incomplete - Cutaway, Van, Step van, Bus, Truck-Tractor, Truck, Motorhome

Primary fuelsGasoline, Diesel, Electric, Flexible Fuel Vehicle (FFV), Compressed Natural Gas (CNG), Liquefied Petroleum Gas (propane or LPG)

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 1GT. The last column counts the shared models.

CodeHolderVehicle typeModel yearsShared models
1GDGeneral Motors LLCincomplete vehicles (chassis)1981–open27 of 39

Compared with the closest code, 2GT

2GT is held by General Motors LLC. Measured by the overlap of the two model lists, it is the code closest to 1GT apart from those listed above.

Models in both17

Only under 1GTAluminum Tilt, Bus Chassis, C5, C6, C7, Caballero, Forward Control, Heavy Conventional, Jimmy Utility, Motorhome Chassis, S15 Utility, Suburban, Jimmy, S6, Magna Van, Sonoma, Savana, Hummer EV Pickup

Model years1GT: 1981–open · 2GT: 1981–2026

Plant countries only for 2GTJapan, South Korea, South Africa

Body classes only for 1GTBus, Truck-Tractor, Truck, Motorhome

Other codes held by General Motors

CodeVehicle typeMakesModel yearsModels
1GCtrucksChevrolet1981–open40
2GCtrucksChevrolet1981–open21
2GTtrucksGMC1981–202617
4GTtrucksIsuzu1992–201015
3GCtrucksChevrolet1981–open12
3GTtrucksGMC1981–open9
1GGtrucksIsuzu1996–20095
2G5trucksBrightDrop, Chevrolet1981–20255

98 more not shown here. All 108 codes of General Motors

GMC under other holders

Models named in each code's rules

  1. 1HV International Motors, LLCUnited States358
  2. 4VZ The Shyft Group, Inc.United States31
  3. 54D The Shyft Group, Inc.United States26
  4. J8D Isuzu Motors Limited, JapanJapan6
  5. 2C0 CAMI Automotive IncCanada5
  6. 7GZ International Motors, LLCUnited States2

Source: NHTSA vPIC, October 2026 release (database updated October 17, 2026). How the figures are counted: How the catalog is read.