Axle, rear, 4.10 ratio

Years 1999–00, 2002–09 Models 5 Factory citations 10

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Also documented for Buick Chevrolet GMC Hummer Oldsmobile

Documented applications

Escalade EXT — GMT800 (2002–2006)

2002–2006 Factory-verified

GM marks it a duplicate with GT8

GM factory document — 2002 cadillac escalade ext rpo code list, p.1.
GM factory document — 2006 cadillac escalade ext rpo code list, p.1.

Escalade EXT — GMT900 (2007–2013)

2007–2009 Factory-verified

The 2007 and 2008 lists add the marker DUP With GT8.

GM factory document — 2007 cadillac escalade ext rpo code list, p.1.
GM factory document — 2009 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)

2002–2006 Factory-verified

GM's list marks it a duplicate of GT8

GM factory document — 2002 cadillac escalade 2wd rpo code list, p.1.
GM factory document — 2006 cadillac escalade rpo code list, p.1.

Escalade — GMT900 (2007–2014)

2007–2009 Factory-verified

The 2007 and 2008 lists add the marker DUP With GT8.

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

This page aggregates every documented appearance of GT5 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.