- 2006, 2007, 2009 Factory-verified
TGA Factory-verified
Also documented for BuickCadillacChevrolet
Documented applications
- 2008–2010, 2014–2018, 2022–2026 Factory-verified
- 2009 Factory-verified
This page aggregates every documented appearance of TGA in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.