Sport Package

Years 2012–13 Models 1

Also documented for Chevrolet GMC

Documented applications

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

2012 Confirmed

2012: Q52 wheels, QKE tires and GNB suspension (GM Authority 2012 RPO list)
2013 Single-source

2013: GNB suspension only (GM Authority 2013 changes); single-source for 2013: GM Authority 2013 changes does not credit GM

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