Speaker system, four dual front door extended range, dual rear liftgate extended range

Years 1998–05 Models 1 Factory citations 8

Also documented for Chevrolet Oldsmobile

Documented applications

Montana — U-body second generation (1997–2005)

1998–2005 Factory-verified

GM factory document — 1998 pontiac trans sport ext rpo code list, p.1.
GM factory document — 1999 pontiac montana ext rpo code list, p.1.
GM factory document — 2000 pontiac montana ext rpo code list, p.1.
GM factory document — 2001 pontiac montana ext rpo code list, p.1.
GM factory document — 2002 pontiac montana ext rpo code list, p.1.
GM factory document — 2003 pontiac montana ext rpo code list, p.1.
GM factory document — 2004 pontiac montana ext rpo code list, p.1.
GM factory document — 2005 pontiac montana 4wd rpo code list, p.1.

This page aggregates every documented appearance of UZ4 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.