Wheel, spare, 17 inch steel

Years 2019–20, 2025–27 Models 2 Factory citations 4

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Also described as Wheel, spare, 17 inch (43.2 cm), steel

Also documented for Buick Chevrolet

Documented applications

Terrain — Second generation (D2XX) (2018–2024)

2019 Factory-verified

SLE, SLT: O; Denali: S; only with the LTG engine; letter O in the code as GM prints it

GM factory document — 2019 gmc terrain order guide copy gm authority, p.9, p.42.
2020 Single-source

with the LTG engine; 2020 from GM Authority's 2021 changes page, which lists it as deleted for 2021 with the LTG; letter O in the code as GM prints it

Terrain — Third generation (2025–2027)

2025–2027 Factory-verified

S on all trims

GM factory document — 2025 gmc next generation terrain fleet order guide, p.4.
GM factory document — 2026 gmc next generation terrain fleet order guide, p.7.
GM factory document — 2027 gmc terrain fleet order guide, p.7.

This page aggregates every documented appearance of 4GO in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.