GM paint code 21U
Blue Metallic, also listed as Radar Blue Metallic.
- Code
21U(also seen as245E,24U,9527)- Finish
- Metallic
- Colour family
- Blue
- Code in use
- 1989–2004 across GM
- Models
- 30
- Screen colour
#004C67approximate
GM models with paint code 21U
Years are the overlap of the code's years with each model's production years. ≈ production years of the model line, not the exact variant; ? production years not confirmed yet.
| Model | Years | Colour name |
|---|---|---|
| GM Allure | 1989–1990 ? | Blue Metallic |
| GM Avalanche | 1989–1990 ? | Blue Metallic |
| GM Bravada | 1990 | Blue Metallic |
| GM Brx | 1989–1990 ? | Blue Metallic |
| GM Canyon | 1989–1990 ? | Blue Metallic |
| GM Colorado | 1989–1990 ? | Blue Metallic |
| GM Corsa | 1989–1990 | Blue Metallic |
| GM Corsa Sedan | 1989–1990 | Blue Metallic |
| GM Corvette | 1989–1990 | Blue Metallic |
| GM G3 Pontiac | 1989–1990 ? | Blue Metallic |
| GM G5 Pontiac | 1989–1990 ? | Blue Metallic |
| GM Grand Prix | 1989–1990 ? | Blue Metallic |
| GM Hummer | 1989–1990 ? | Blue Metallic |
| GM Impala | 1989–1990 | Blue Metallic |
| GM Malibu | 1989–1990 ? | Blue Metallic |
| GM Malibu Maxx | 1989–1990 ? | Blue Metallic |
| GM Metro | 1989–1990 | Blue Metallic |
| GM Monte Carlo | 1989–1990 | Blue Metallic |
| GM Pursuit | 1989–1990 ? | Blue Metallic |
| GM Rainier | 1989–1990 ? | Blue Metallic |
| GM Regal | 1989–1990 | Blue Metallic |
| GM Sierra | 1989–1990 | Blue Metallic |
| GM Srx | 1989–1990 ? | Blue Metallic |
| GM Suburban | 1989–1990 | Blue Metallic |
| GM Terrain | 1989–1990 ? | Blue Metallic |
| GM Trans Sport | 1989–1990 | Blue Metallic |
| GM Vectra | 1989–1990 | Blue Metallic |
| GM Vue | 1989–1990 ? | Blue Metallic |
| GM Wave | 1989–1990 ? | Blue Metallic |
| GM Yukon | 1989–1990 ? | Blue Metallic |
18 more models listed with this code, but outside their production years
- GM Astra (built 1991–present)
- GM Aura (built 2006–2009)
- GM Aveo (built 2002–present)
- GM Camaro (built 2015–2023)
- GM Chevrolet Cruze (built 2008–2023)
- GM Cobalt (built 2004–present)
- GM Cruze (built 2008–2023)
- GM Envoy (built 1997–2008)
- GM Escalade (built 1998–present)
- GM G6 Pontiac (built 2004–2010)
- GM Hhr (built 2005–2011)
- GM Hummer H3 (built 2005–2010)
- GM Ion (built 2002–2007)
- GM Lacrosse (built 2004–present)
- GM Silverado (built 1998–present)
- GM Ssr (built 2023–present)
- GM Tahoe (built 1991–present)
- GM Trailblazer (built 2020–present)
Where to find code 21U on your GM
Service Parts Identification (SPID) label. A code starting with WA followed by digits (for example WA8555), or a three-character code such as GAZ; the line often starts with BC/CC and U.
Touch-up paint for Blue Metallic
Ask for GM 21U and give the model year: paint suppliers mix by code, and some codes have several variants (this one also appears as 245E, 24U, 9527).
This is a metallic colour: it needs a basecoat and a clear coat. Pens and aerosols for metallics usually come with a separate clear.
Read the touch-up paint guide before you start.