TL4 Factory-verified

Cadillac · Regular Production Option

Grille, painted

Years 1998–09 Models 7 Factory citations 17

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Also documented for Chevrolet Hummer Oldsmobile Pontiac

Documented applications

CTS — Sigma / GMX320 (2003–2007)

2006–2007 Factory-verified

GM factory document — 2006 cadillac cts rpo code list, p.1.
GM factory document — 2007 cadillac cts rpo code list, p.1.

DeVille — G-body (2000–2005)

2000–2005 Factory-verified

GM factory document — 2000 cadillac deville rpo code list, p.1.
GM factory document — 2005 cadillac deville rpo code list, p.1.

DeVille — K-body (1994–1999)

1998–1999 Factory-verified

GM factory document — 1998 cadillac deville rpo code list, p.1.
GM factory document — 1999 cadillac deville rpo code list, p.1.

DTS — G-body (2006–2011)

2006–2009 Factory-verified

GM factory document — 2006 cadillac dts rpo code list, p.1.
GM factory document — 2009 cadillac dts rpo code list, p.1.

Eldorado — E-body (1992–2002)

1998–2002 Factory-verified

GM factory document — 1998 cadillac eldorado rpo code list, p.1.
GM factory document — 1999 cadillac eldorado rpo code list, p.1.
GM factory document — 2000 cadillac eldorado rpo code list, p.1.
GM factory document — 2001 cadillac eldorado rpo code list, p.1.
GM factory document — 2002 cadillac eldorado rpo code list, p.1.

Seville — G-body (1998–2004)

1998–1999 Factory-verified

GM factory document — 1998 cadillac seville rpo code list, p.1.
GM factory document — 1999 cadillac seville rpo code list, p.1.

SRX — Sigma / GMT265 (2004–2009)

2007–2009 Factory-verified

GM factory document — 2007 cadillac srx rpo code list, p.1.
GM factory document — 2009 cadillac srx rpo code list, p.1.

This page aggregates every documented appearance of TL4 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.