Trim group, Verano Premium Turbo Group

Years 2012, 2014, 2016 Models 2 Factory citations 2

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Also described as Equipment group 1ST

Also documented for Cadillac Chevrolet GMC

Documented applications

LaCrosse — Epsilon II, 2nd gen (2010–2016)

2012 Confirmed

replaced the CXS with the UYS navigation radio, PCI and PCZ for 2012 (GM Authority 2012 RPO list)

Verano — Delta II (2012–2017)

2014, 2016 Factory-verified

2014: GM 2014 fleet guide, Verano page (engine list; the guide calls the group Verano Premium Group, model 4PH69); the NICB manuals print a Premium Group Turbo series from 2013 (2013 p.35); the 2016 manual (p.41) gives the code

GM factory document — 2016 buick verano fleet order guide wayback, p.2.
GM factory document — 2014 gm fleet car truck guide copy xr793, p.33.

This page aggregates every documented appearance of 1ST in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.