Z56 ✓ Factory-verified

Cadillac · Regular Production Option

Chassis package, police conversion

Years 1999–00, 2007–09 Models 3 Factory citations 6

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Also described as Police conversion chassis package

Also documented for ChevroletGMC

Documented applications

Escalade EXT — GMT900 (2007–2013) →

• 2007–2009 ✓ Factory-verified
  ⛭ 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 — GMT900 (2007–2014) →

• 2007–2009 ✓ Factory-verified
  ⛭ 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 Z56 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.