S4Z ✓ Factory-verified

GMC · Regular Production Option

LPO, trailer mirror extension

Years 2020, 2022–24 Models 1 Factory citations 4

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Documented applications

Sierra — T1XX (2019–2026) →

• 2020, 2022–2024 ✓ Factory-verified
  ⛭ GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.14.

  ⛭ GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.13.

  ⛭ GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.13.

  ⛭ GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.15.

This page aggregates every documented appearance of S4Z in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.