F38 ✓ Factory-verified

Cadillac · Regular Production Option

Level control, automatic, rear air springs

Years 2006–09, 2018 Models 2 Factory citations 2

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Also described as Chassis, rear, air, increased ride

Documented applications

DTS — G-body (2006–2011) →

• 2006–2009 ✓ Factory-verified
  ⛭ GM factory document — 2006 cadillac dts rpo code list, p.1.

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

XTS — Epsilon II, enlarged (2013–2019) →

• 2018 ● Confirmed

  no longer available on the XTS and Luxury trims (GM Authority 2018 XTS changes)

This page aggregates every documented appearance of F38 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.