JL4 ✓ Factory-verified

Buick · Regular Production Option

Control, active brake

Years 2000–09, 2014, 2018–19 Models 6 Factory citations 14

Query this via API →

Also described as StabiliTrak, stability control system

Also documented for CadillacChevroletGMCHummerOldsmobilePontiacSaturn

Documented applications

Encore — Gamma II (2013–2022) →

• 2014, 2018–2019 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2014 buick encore fleet order guide wayback, p.4.

  ⛭ GM factory document — 2018 buick encore order guide copy gm authority, p.6, p.23.

  ⛭ GM factory document — 2019 buick encore order guide copy gm authority, p.5, p.21.

LaCrosse — W-body / GMX365 (2005–2009) →

• 2005–2009 ✓ Factory-verified
  ⛭ GM factory document — 2005 buick lacrosse rpo code list, p.1.

  ⛭ GM factory document — 2009 buick lacrosse rpo code list, p.1.

LeSabre — H-body (2000–2005) →

• 2000–2005 ✓ Factory-verified
  ⛭ GM factory document — 2000 buick lesabre rpo code list, p.1.

  ⛭ GM factory document — 2005 buick lesabre rpo code list, p.1.

Lucerne — G-body (2006–2011) →

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

  ⛭ GM factory document — 2009 buick lucerne rpo code list, p.1.

Park Avenue — G-body (1997–2005) →

• 2000–2005 ✓ Factory-verified
  ⛭ GM factory document — 2000 buick park avenue rpo code list, p.1.

  ⛭ GM factory document — 2005 buick park avenue rpo code list, p.1.

Terraza — U-body / GMT201 (2005–2007) →

• 2005–2007 ✓ Factory-verified
  ⛭ GM factory document — 2005 buick terraza rpo code list, p.1.

  ⛭ GM factory document — 2006 buick terraza rpo code list, p.1.

  ⛭ GM factory document — 2007 buick terraza rpo code list, p.1.

This page aggregates every documented appearance of JL4 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.