- 2023–2027 Factory-verified
ZR2: S; WT, LT, Trail Boss, Z71: not offered
R1U Factory-verified
Also described as Wheels, 5-spoke aluminum
Also documented for CadillacGMC
Documented applications
- 2014 Single-source
deleted for 2015 (GM Authority 2015 changes page), which places it in 2014
This page aggregates every documented appearance of R1U in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.