WMZ ✓ Factory-verified

GMC · Regular Production Option

VIN model year, 2025

Years 2025 Models 1 Factory citations 1

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Documented applications

Sierra — T1XX (2019–2026) →

• 2025 ✓ Factory-verified internal
  ⛭ GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.16.

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