Model conversion, LT

Years 1973–81, 1990–91, 2006, 2008–09 Models 5 Factory citations 10

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Also described as Interior Decor / Quiet Sound groupInterior decor/quiet groupLTZ package

Documented applications

Camaro

1973–1981 Factory-verified

standard with Type LT

GM Heritage factory kit — 1973 Chevrolet Camaro, p.6.
GM Heritage factory kit — 1981 Chevrolet Camaro, p.39.

Nova / Chevy II

1973–1975 Factory-verified

GM Heritage factory kit — 1973 Chevrolet Nova, p.8.
GM Heritage factory kit — 1975 Chevrolet Nova, p.22.

Corsica — L-body (1987–1996)

1990–1991 Factory-verified

only in: LTZ sedan; the LTZ model line reads 1LZ69 with Z54 on the 1990 series page p.17 and the 1991 power teams page p.6; the 1990 power teams and curb-mass pages print 254; the 1992–1996 exhaust pages still name Z54, but no LTZ is on those years' power teams pages; GM's Impala lists read Z54 as model conversion, LT

GM Heritage factory kit — 1990 Chevrolet Corsica, p.17.
GM Heritage factory kit — 1991 Chevrolet Corsica, p.6.

Impala — ninth generation (2006–2016)

2006, 2008–2009 Factory-verified

The 2007 list does not print it.

GM factory document — 2006 chevrolet impala rpo code list, p.1.
GM factory document — 2008 chevrolet impala rpo code list, p.1.
GM factory document — 2009 chevrolet impala rpo code list, p.1.

Monte Carlo — sixth generation (2000–2007)

2006 Factory-verified

2006 list prints a dash; Wikipedia lists the LT trim.

GM factory document — 2006 chevrolet monte carlo rpo code list, p.1.

This page aggregates every documented appearance of Z54 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.