- 2013 Confirmed
dropped for 2014 (GM Authority 2014 changes page); GM uses the code for Heritage Blue Metallic on its pickups; GM Authority's 2014 changes page, headed "Official Changes", credits GM for the codes
Also described as Primary color, exterior, Blue Topaz MetallicBlue Topaz Metallic
Documented applications
- 2013 Confirmed
deleted for 2014 (GM Authority 2014 RPO changes, which it calls GM's official change list); GM's pickup lists use GTS for Heritage Blue Metallic
- 2014 Factory-verified
touch-up WA-933L; not at start of production; not on Eco
- 2013 Confirmed
deleted for 2014 (GM's 2014 RPO change list, GM Authority), which places it in 2013
- 2014 Factory-verified
the Sierra HD doc's GMC guides name it Heritage Blue Metallic
- 2015 Single-source
GM Authority's 2016 changes article lists it among the 2015 colors deleted for 2016; no GM document for 2015
- 2012 Single-source
new for 2012, late availability (GM Authority 2012 RPO changes, which do not say they come from GM); the 2014 change list (GM Authority 2014 RPO changes, which it calls GM's official change list) deletes it for 2014, but no source shows it in 2013, so 2013 is left out; GM's pickup lists use GTS for Heritage Blue Metallic; no GM document read
This page aggregates every documented appearance of GTS in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.