NCH ✓ Factory-verified

Chevrolet · Regular Production Option

Door locks, rear child security

Years 2017, 2023–27 Models 6 Factory citations 26

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Also described as Child lock system, rear door latchDoor locks, rear child security lock, manual child lock system on rear door latch

Also documented for BuickCadillacGMC

Documented applications

Blazer EV (2024–2027) →

• 2025–2027 ✓ Factory-verified
  ⛭ GM factory document — 2025 chevrolet blazer ev fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 chevrolet blazer ev fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 chevrolet blazer ev fleet order guide rpo codes, p.1.

Bolt EV — first generation (2017–2023) →

• 2017, 2023 ✓ Factory-verified

  LT, Premier: S

  ⛭ GM factory document — 2017 chevrolet bolt ev fleet order guide wayback, p.2.

  ⛭ GM factory document — 2023 chevrolet 23 bolt ev body builder sm en us 2022aug26, p.10.

  ⛭ GM factory document — 2023 chevrolet 23 bolt euv body builder sm en us 2022aug29, p.10.

  ⛭ GM factory document — 2023 chevrolet bolt euv fleet order guide wayback, p.1.

Colorado — Third generation (2023–2027) →

• 2023–2027 ✓ Factory-verified

  S on all trims

  ⛭ GM factory document — 2023 chevrolet 23colorado electrical body builder, p.11.

  ⛭ GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.12.

  ⛭ GM factory document — 2025 chevrolet colorado fleet order guide, p.29.

  ⛭ GM factory document — 2026 chevrolet colorado fleet order guide, p.33.

  ⛭ GM factory document — 2027 chevrolet colorado fleet order guide, p.32.

Equinox EV — Ultium BEV2 (2024–2027) →

• 2025–2027 ✓ Factory-verified
  ⛭ GM factory document — 2025 chevrolet new 25my equinox ev fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 chevrolet equinox ev fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 chevrolet equinox ev fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 chevrolet new 25my equinox ev fleet order guide, p.3.

  ⛭ GM factory document — 2026 chevrolet equinox ev fleet order guide, p.2.

  ⛭ GM factory document — 2027 chevrolet equinox ev fleet order guide, p.2.

Silverado EV — BT1 (2024–2027) →

• 2024–2027 ✓ Factory-verified
  ⛭ GM factory document — 2024 chevrolet silverado ev fleet fleet order guide wayback, p.1.

  ⛭ GM factory document — 2027 chevrolet silverado ev fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 chevrolet silverado ev fleet order guide, p.5.

  ⛭ GM factory document — 2026 chevrolet silverado ev fleet order guide, p.6.

  ⛭ GM factory document — 2027 chevrolet silverado ev fleet order guide, p.7.

Trailblazer — First generation, VSS-F (2021–2027) →

• 2025–2027 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2025 chevrolet trailblazer fleet order guide, p.2.

  ⛭ GM factory document — 2026 chevrolet trailblazer fleet order guide, p.2.

  ⛭ GM factory document — 2027 chevrolet trailblazer limited fleet order guide, p.2.

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