Primary color, exterior, Heritage Blue Metallic

Years 2013–14 Models 3 Factory citations 3

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Also described as Paint, Cobalt Blue Metallic

Also documented for Buick Chevrolet

Documented applications

Sierra — GMT900 (2007–2013)

2013 Single-source

New for 2013 per GM Authority. GM Authority 2013 Sierra RPO Central (https://gmauthority.com/blog/2012/04/2013-gmc-sierra-1500-and-sierra-hybrid-rpo-central/)

Sierra HD — GMT900 (2007–2014)

2014 Factory-verified

not available with PDA or PEB

GM factory document — 2014 gmc sierra 2500hd fleet order guide wayback, p.1.
GM factory document — 2014 gmc sierra 3500hd fleet order guide wayback, p.1.

Sierra — K2XX (2014–2019)

2014 Factory-verified

not with the All Terrain package (GAT).

GM factory document — 2014 gmc sierra 1500 fleet order guide wayback, p.1.

This page aggregates every documented appearance of GTS in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.