- 2018–2019 Factory-verified
2019 guide: all trims: S
Also described as Teen Driver modeTeen driver
Also documented for BuickCadillacChevrolet
Documented applications
- 2025–2027 Factory-verified
S on all trims
- 2017, 2019, 2021–2022 Factory-verified
2021: S on all trims
- 2023–2027 Factory-verified
S on all trims
- 2025–2026 Factory-verified
- 2025–2026 Factory-verified
- 2027 Factory-verified
all trims: S; configurable settings tied to a key fob that can limit certain vehicle features; an in-vehicle report shows driving habits
- 2018–2019 Factory-verified
configurable key fob settings and in-vehicle report card; 2019 marks: Sierra, SLE, SLT: S; 2018: GM's 2018 Sierra 2500HD order guide
- 2025–2027 Factory-verified
Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: S
- 2019–2020, 2022–2025 Factory-verified
- 2019 Factory-verified
all trims: S
- 2025–2027 Factory-verified
S on all trims
- 2017–2018 Factory-verified
2018: S on all trims; the 2015 and 2016 guides do not print it; 2018 from GM's 2018 Yukon order guide
- 2022–2023, 2025–2027 Factory-verified
2027: S on all trims
- 2022–2023, 2025–2027 Factory-verified
2027: S on all trims
This page aggregates every documented appearance of TDM in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.