Performance package, higher payload

Years 2014 Models 1 Factory citations 1

Also documented for Buick

Documented applications

Sierra HD — GMT900 (2007–2014)

2014 Factory-verified

only in: 2500; heavier-duty frame and rear suspension, includes C7A and a 6,700 lb rear axle rating

GM factory document — 2014 gmc sierra 2500hd fleet order guide wayback, p.4.

This page aggregates every documented appearance of UB7 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.