- 2015–2016 Factory-verified
extended cab 2WD only (model T2M53), not for fleet or government orders; the guides print the code with a footnote digit in their column headings and plainly in the color notes
2SA Factory-verified
Also described as Equipment group, SL
Also documented for Chevrolet
Documented applications
- 2019 Factory-verified
FWD model only (TXL26); retail orders only
This page aggregates every documented appearance of 2SA in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.