Color combination, solid

Years 1999–00, 2003–06 Models 3 Factory citations 6

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Also documented for Buick Chevrolet GMC Hummer Oldsmobile

Documented applications

Escalade EXT — GMT800 (2002–2006)

2003–2006 Factory-verified

GM factory document — 2003 cadillac escalade ext rpo code list, p.1.
GM factory document — 2006 cadillac escalade ext rpo code list, p.1.

Escalade — GMT400-based, GMT435 (1999–2000)

1999–2000 Factory-verified

GM factory document — 1999 cadillac escalade rpo code list, p.1.
GM factory document — 2000 cadillac escalade rpo code list, p.1.

Escalade — GMT800 (2002–2006)

2003–2006 Factory-verified

GM factory document — 2003 cadillac escalade 2wd rpo code list, p.1.
GM factory document — 2006 cadillac escalade rpo code list, p.1.

This page aggregates every documented appearance of ZY1 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.