- 2023 Factory-verified
a letter O; ST0 is a different code (third-row seat delete, WT Custom package) in GM's other lists
STO Factory-verified
Documented applications
- 2014 Factory-verified
1LT, 2LT: O; included with and only available with CBT; printed with a letter O, as bolt-gen1 keeps it (ST0 is a different code in GM's other lists)
This page aggregates every documented appearance of STO in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.