IL4 ✓ Factory-verified

Cadillac · Regular Production Option

Trim, interior design L4

Years 1999, 2008 Models 5 Factory citations 5

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Also described as Trim, interior design (L4)

Also documented for Chevrolet

Documented applications

CTS — Sigma II (2008–2015) →

• 2008 ✓ Factory-verified
  ⛭ GM factory document — 2008 cadillac cts rpo code list, p.1.

DTS — G-body (2006–2011) →

• 2008 ✓ Factory-verified
  ⛭ GM factory document — 2008 cadillac dts rpo code list, p.1.

Seville — G-body (1998–2004) →

• 1999 ✓ Factory-verified
  ⛭ GM factory document — 1999 cadillac seville rpo code list, p.1.

STS — Sigma (2005–2011) →

• 2008 ✓ Factory-verified

  Interior design code.

  ⛭ GM factory document — 2008 cadillac sts rpo code list, p.1.

XLR — Y-body (2004–2009) →

• 2008 ✓ Factory-verified
  ⛭ GM factory document — 2008 cadillac xlr rpo code list, p.1.

This page aggregates every documented appearance of IL4 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.