- 2020 Single-source
touch-up WA-326E; extra cost, not on SL (GM Authority); 2020: GM Authority 2020 first-look color article
GLR Single-source
Also documented for BuickCadillacChevrolet
Documented applications
This page aggregates every documented appearance of GLR in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.