JL9 (X) ● Confirmed

Cadillac · Regular Production Option

Track Master rear-brake skid control

Years 1971–72 Models 1

Documented applications

DeVille / Calais →

• 1971–72 ● Confirmed

  Eldorado only at intro

This page aggregates every documented appearance of JL9 (X) in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.