J64 ✓ Factory-verified

GMC · Regular Production Option

Brakes, 4-wheel antilock, 4-wheel disc, with DURALIFE rotors

Years 2027 Models 1 Factory citations 2

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Also documented for Chevrolet

Documented applications

Sierra HD — T1XX (2020–2027) →

• 2027 ✓ Factory-verified

  the 2027 lists print "Brakes, 4-wheel antilock"; the 2027 guides list J64 where the 2025 and 2026 guides list J61; Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: S

  ⛭ GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.8.

Related codes · mentioned in these notes

J61

This page aggregates every documented appearance of J64 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.