Arm, left torsion bar spring adjustment (C)

Years 1999–00, 2002, 2004–06 Models 3 Factory citations 6

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Also described as Torsion bar spring adjuster (C)

Also documented for Chevrolet GMC Oldsmobile

Documented applications

Escalade EXT — GMT800 (2002–2006)

2002, 2004–2006 Factory-verified

the 2002 list abbreviates LH and Adj

GM factory document — 2002 cadillac escalade ext rpo code list, p.1.
GM factory document — 2006 cadillac escalade ext rpo code list, p.1.

Escalade — GMT400-based, GMT435 (1999–2000)

1999–2000 Factory-verified

GM factory document — 1999 cadillac escalade rpo code list, p.1.
GM factory document — 2000 cadillac escalade rpo code list, p.1.

Escalade — GMT800 (2002–2006)

2002, 2004–2006 Factory-verified

GM factory document — 2002 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 FF4 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.