- 2025–2027 Factory-verified
2027: LT, Z71, High Country: O
R6Y Factory-verified
Also described as Discount, OnStar Plus Package not desired
Documented applications
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the 2005 order guide prints it as "OnStar Plus Package discount not desired"
GM Heritage factory kit — 2005 Chevrolet Tahoe, p.121.
- 2025–2027 Factory-verified
2027: LT, Z71, High Country: O
This page aggregates every documented appearance of R6Y in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.