NR4 ✓ Factory-verified

Cadillac · Regular Production Option

Transfer case, 4 wheel drive (4WD), open differential, 2 speed

Years 2003–06 Models 2 Factory citations 4

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Also documented for ChevroletGMCHummer

Documented applications

Escalade EXT — GMT800 (2002–2006) →

• 2003–2006 ✓ Factory-verified
  ⛭ GM factory document — 2003 cadillac escalade ext rpo code list, p.1.

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

Escalade — GMT800 (2002–2006) →

• 2003–2006 ✓ Factory-verified
  ⛭ GM factory document — 2003 cadillac escalade 2wd rpo code list, p.1.

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

This page aggregates every documented appearance of NR4 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.