Theft deterrent system, export specific

Years 1998–09 Models 5 Factory citations 15

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Also described as Switch, hood ajar, export

Documented applications

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)

1998–1999 Factory-verified

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

Seville — G-body (1998–2004)

1998 Factory-verified

the 1999–2004 lists read switch, hood ajar, export (second row)

GM factory document — 1998 cadillac seville rpo code list, p.1.
1999–2004 Factory-verified

the 1998 list reads theft deterrent system, export specific (first row)

GM factory document — 1999 cadillac seville rpo code list, p.1.
GM factory document — 2000 cadillac seville rpo code list, p.1.
GM factory document — 2001 cadillac seville rpo code list, p.1.
GM factory document — 2002 cadillac seville rpo code list, p.1.
GM factory document — 2003 cadillac seville rpo code list, p.1.
GM factory document — 2004 cadillac seville rpo code list, p.1.

This page aggregates every documented appearance of T1A in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.