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1G1Chevrolet passenger cars

Held by General Motors LLC · registered in the United States

WMI 1G1 decodes 39 models, the seventh longest list among the 250 passenger car WMIs in the catalog. Its rules place assembly in five countries. The same rules start at model year 1981 and have no end year. Its rules name 12 percent of the 313 models found under all 108 codes of General Motors.

Models in the decoding rules, by model year

  1. Camaro1981–2024
  2. Caprice1981–1996
  3. Cavalier1981–2005
  4. Chevette1981–1987
  5. Citation1981–1985
  6. Corvette1981–2027
  7. Impala1981–2020
  8. Malibu1981–2025
  9. Monte Carlo1981–2007
  10. Celebrity1984–1990
  11. Beretta1985–1996
  12. Corsica1985–1996
  13. Geo Spectrum1985–1989
  14. Geo Sprint1985–1988
  15. Hearse/Limo Commercial Chassis1985–1993
  16. Nova1985–1988
  17. Lumina1990–2001
  18. Metro1994–2001
  19. Hearse/Limo1995
  20. Alero1999
  21. Aveo2004–2012
  22. Epica2004–2006
  23. Malibu Classic2004–2005
  24. Matiz2004–2012
  25. Optra2004–2009
  26. U1002004–2005
  27. Cobalt2005–2010
  28. Kalos2008
  29. Spark2008–2012
  30. Cruze2010–2019
  31. Caprice Police Vehicle2011–2012
  32. Volt2011–2019
  33. Sonic2012–2020
  34. Impala Limited2015–2016
  35. Cruze Limited2016
  36. Malibu Limited2016

Also in the rules (3 more): Bolt EV, Bolt EUV, Bolt.

Where the rules place assembly

Plant countriesUnited States, Canada, Mexico, Japan, Australia

Plant locations namedBowling Green; Kansas City; Orion; Lordstown; Lansing - Grand River; Wilmington; Spring Hill; Hamtramck; Detroit Hamtramck; Oklahoma City; Lansing - North Plant; Flint; Lansing - Craft Center; Arlington and 26 more

Bodies and power

Body classesSedan, Convertible, Coupe, Hatchback, Wagon, Incomplete, SUV, Incomplete - Commercial Chassis

Primary fuelsGasoline, Electric, Diesel, Flexible Fuel Vehicle (FFV), Compressed Natural Gas (CNG)

Electrified versionsBattery electric, Hybrid, Mild hybrid, Plug-in hybrid

Compared with the closest code, 2G1

2G1 is held by General Motors LLC. Measured by the overlap of the two model lists, it is the code closest to 1G1.

Models in both34

Only under 1G1Cruze Limited, Malibu Limited, Bolt EV, Bolt EUV, Bolt

Model years1G1: 1981–open · 2G1: 1981–2020

Plant countries only for 1G1Australia

Plant countries only for 2G1South Korea, Poland

Other codes held by General Motors

CodeVehicle typeMakesModel yearsModels
2G1passenger carsChevrolet1981–202034
3G1passenger carsChevrolet1985–202434
1G2passenger carsPontiac1981–201030
1G8passenger carsSaturn1981–201030
2G2passenger carsPontiac1981–201030
3G2passenger carsPontiac1985–201026
KL2passenger carsPontiac1985–201026
2C1passenger carsChevrolet, Geo1981–201024

99 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.