5W4 ✓ Factory-verified

Cadillac · Regular Production Option

Vehicle special service, municipal

Years 2007–09 Models 2 Factory citations 4

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Also documented for ChevroletGMC

Documented applications

Escalade EXT — GMT900 (2007–2013) →

• 2007–2009 ✓ Factory-verified

  The 2009 list words it as sales package, special service, municipal.

  ⛭ 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 — GMT900 (2007–2014) →

• 2007–2009 ✓ Factory-verified

  The 2009 list words it as sales package, special service, municipal.

  ⛭ 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 5W4 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.