- 2016, 2021–2022 Factory-verified
the 2016 guide names it in a note; the upfitter list names it color combination, solid, special paint; 2021 from the upfitter list GM files for 2021 and 2022
TGK Factory-verified
Also described as Special paintColor combination, special paint, solid
Also documented for CadillacChevrolet
Documented applications
- 1998–2000 Factory-verified
- 1999–2000 Factory-verified
- 2019–2020 Factory-verified
- 1999 Factory-verified
- 1999 Factory-verified
This page aggregates every documented appearance of TGK in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.