Axle, 3.49 final drive ratio

Years 2018–19, 2024–26 Models 2 Factory citations 7

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Also documented for Buick Cadillac GMC

Documented applications

Blazer — C1XX (2019–2026)

2019, 2025–2026 Factory-verified

2LT: not available; 3LT: 2025: O; 2026: not available; RS: 2025: S; 2026: O; Premier: O (2025 only); with the LGX engine; the 2019 guide marks it standard on 2LT, 3LT, RS and Premier

GM factory document — 2019 chevrolet all new blazer fleet order guide wayback, p.4.
GM factory document — 2025 chevrolet blazer fleet order guide rpo codes, p.1.
GM factory document — 2025 chevrolet blazer fleet order guide, p.8.
GM factory document — 2026 chevrolet blazer fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet blazer fleet order guide, p.25.

Traverse — C1XX (2018–2024)

2018–2019 Factory-verified

S on all trims; GM Authority's later model-year pages give a 3.49 axle without the code

GM factory document — 2018 chevrolet traverse order guide copy gm authority, p.18, p.57.
GM factory document — 2019 chevrolet traverse order guide copy gm authority, p.20, p.85.
2024 Single-source

decoderpo.com's 2024 Traverse Limited order guide page lists it on its Standart Equipment tab (1LS); the page is a T3 mirror of GM's guide and the repository holds no GM document for 2024

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