Cluster, instrument, oil, coolant temperature, trip odometer, tachometer, supercharger boost

Years 2004–07 Models 2 Factory citations 8

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Documented applications

Impala — eighth generation (2000–2005)

2004–2005 Factory-verified

the lists read "Cluster INST ... Super Charger Boost".

GM factory document — 2004 chevrolet impala rpo code list, p.1.
GM factory document — 2005 chevrolet impala rpo code list, p.1.
GM Heritage factory kit — 2004 Chevrolet Impala, p.30.

Monte Carlo — sixth generation (2000–2007)

2004–2007 Factory-verified

Wikipedia: supercharged SS 2004-2005. Also in the kit's Monte Carlo order guide.

GM factory document — 2004 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2005 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2006 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2007 chevrolet monte carlo rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Monte Carlo, p.93.

This page aggregates every documented appearance of UC9 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.