Primary color, exterior, Laser Blue Metallic

Years 1998, 2003, 2005–07 Models 5 Factory citations 12

Also described as Primary color, exterior, Pace Car PurplePrimary color, exterior, Electron Blue MetallicPaint, primary exterior, Laser Blue Metallic

Documented applications

Corvette — C5 (1997–2004)

1998 Factory-verified

pairs with Z4Z (1998 list)

GM factory document — 1998 chevrolet corvette rpo code list, p.1.
2003 Factory-verified

Heritage 2003 order guide only; a different color from the 1998 Pace Car Purple under the same code

GM Heritage factory kit — 2003 Chevrolet Corvette, p.119.

Equinox — first generation (2005–2009)

2005, 2007 Factory-verified

touch-up paint WA-227M; kit color and trim page.

GM Heritage factory kit — 2005 Chevrolet Equinox, p.93.
GM Heritage factory kit — 2007 Chevrolet Equinox, p.102.

Impala — eighth generation (2000–2005)

2005 Factory-verified

Kit-only code (2005 only).

GM Heritage factory kit — 2005 Chevrolet Impala, p.111.

Impala — ninth generation (2006–2016)

2006–2007 Factory-verified

Touch-up WA-218M; not on LS. Not on the factory lists.

GM Heritage factory kit — 2006 Chevrolet Impala, p.128.
GM Heritage factory kit — 2007 Chevrolet Impala, p.126.

Monte Carlo — sixth generation (2000–2007)

2005–2006 Factory-verified

Kit-only code (touch-up WA-218M).

GM Heritage factory kit — 2005 Chevrolet Monte Carlo, p.112.
GM Heritage factory kit — 2005 Chevrolet Monte Carlo, p.113.
GM Heritage factory kit — 2005 Chevrolet Monte Carlo, p.114.
GM Heritage factory kit — 2006 Chevrolet Monte Carlo, p.125.
GM Heritage factory kit — 2006 Chevrolet Monte Carlo, p.126.

This page aggregates every documented appearance of 21U in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.