WML ✓ Factory-verified

GMC · Regular Production Option

VIN model year, 2020

Years 2020 Models 1 Factory citations 1

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Documented applications

Sierra — T1XX (2019–2026) →

• 2020 ✓ Factory-verified internal
  ⛭ GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.16.

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