JK4 ✓ Factory-verified

Chevrolet · Regular Production Option

Brake, hydraulic power, 4 wheel disc, 12,300 lbs, without ABS

Years 2009 Models 2 Factory citations 2

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Also documented for GMC

Documented applications

Silverado — GMT900 (2007–2013) →

• 2009 ✓ Factory-verified
  ⛭ GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — GMT900 (2007–2014) →

• 2009 ✓ Factory-verified
  ⛭ GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

This page aggregates every documented appearance of JK4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.