NU1 ✓ Factory-verified

Cadillac · Regular Production Option

Emission system, California, LEV2

Years 2004–09 Models 7 Factory citations 13

Query this via API →

Also documented for BuickChevroletGMCOldsmobilePontiacSaturn

Documented applications

CTS — Sigma II (2008–2015) →

• 2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2009 cadillac cts rpo code list, p.1.

CTS — Sigma / GMX320 (2003–2007) →

• 2004–2007 ✓ Factory-verified internal
  ⛭ GM factory document — 2004 cadillac cts rpo code list, p.1.

  ⛭ GM factory document — 2007 cadillac cts rpo code list, p.1.

Escalade EXT — GMT900 (2007–2013) →

• 2007–2009 ✓ Factory-verified internal
  ⛭ 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 internal
  ⛭ GM factory document — 2007 cadillac escalade rpo code list, p.1.

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

SRX — Sigma / GMT265 (2004–2009) →

• 2004–2007, 2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2004 cadillac srx rpo code list, p.1.

  ⛭ GM factory document — 2009 cadillac srx rpo code list, p.1.

STS — Sigma (2005–2011) →

• 2005–2007, 2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1.

  ⛭ GM factory document — 2009 cadillac sts rpo code list, p.1.

XLR — Y-body (2004–2009) →

• 2007–2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2007 cadillac xlr rpo code list, p.1.

  ⛭ GM factory document — 2009 cadillac xlr rpo code list, p.1.

This page aggregates every documented appearance of NU1 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.