1NX 1Y1 5Y2
New United Motor Manufacturing, Inc.
New United Motor Manufacturing, Inc.'s codes decode four makes: Chevrolet, Geo, Pontiac and Toyota. Plants in six countries appear in its rules. Its decoding rules cover model years 1984 to 2012 and stop there.
Model years covered by each code
One bar per three-character code, grouped by the vehicle type NHTSA lists for it. Bars reaching 2027 include rules with no end year.
Passenger cars 3
- 1NX1984–2011
- 1Y11985–2002
- 5Y22003–2012
Every code, side by side
| Code | Vehicle type | Makes | Model years | Models | Plant countries |
|---|---|---|---|---|---|
| 1NX | passenger cars | Toyota | 1984–2011 | 7 | Japan, United States, Canada |
| 1Y1 | passenger cars | Chevrolet, Geo | 1985–2002 | 17 | United States, Japan, Australia |
| 5Y2 | passenger cars | Pontiac | 2003–2012 | 6 | United States, Canada, Mexico |
Models found under the most codes
Model, model years across all codes, and how many of the codes name it
- Camry1984–2006 · 1 code
- Corolla1984–2011 · 1 code
- Beretta1985–1988 · 1 code
- Camaro1985–1988 · 1 code
- Caprice1985–1988 · 1 code
- Cavalier1985–1988 · 1 code
- Celebrity1985–1988 · 1 code
- Chevette1985–1987 · 1 code
- Citation1985–1985 · 1 code
- Corsica1985–1988 · 1 code
- Corvette1985–1988 · 1 code
- Geo Spectrum1985–1988 · 1 code
- Geo Sprint1985–1988 · 1 code
- Hearse/Limo Commercial Chassis1985–1988 · 1 code
- Impala1985–1985 · 1 code
- Monte Carlo1985–1988 · 1 code
- Nova1985–1988 · 1 code
- Prizm1989–1997 · 1 code
- Supra1993–1995 · 1 code
- Avalon1995–1995 · 1 code
- Paseo1995–1995 · 1 code
- Geo Prizm1998–2002 · 1 code
- Vibe2003–2010 · 1 code
- SCION tC2006–2006 · 1 code
- SCION xA2006–2006 · 1 code
- G32009–2010 · 1 code
- G52009–2010 · 1 code
- G62009–2010 · 1 code
- G82009–2010 · 1 code
- Solstice2009–2010 · 1 code
Codes per make
Number of New United Motor Manufacturing codes that decode each make
Source: NHTSA vPIC, October 2026 release (database updated October 17, 2026). How the figures are counted: How the catalog is read.