Radio, AM/FM stereo, auto reverse cassette (UT6 radio), equalizer, clock, ETR, with compact disc (remote CD)

Years 1998–99 Models 1 Factory citations 2

Also documented for Chevrolet Oldsmobile

Documented applications

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

1998–1999 Factory-verified

requires UZ5

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.

This page aggregates every documented appearance of UM1 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.