- 1991, 1993–1994 Factory-verified
the code is printed in the "Restrictions, Requirements" column (model code and option, such as "1WA00 & Z34") of the D80 spoiler entry on the weight pages; the 1992 p.57, 1993 p.75 and 1994 p.44 weight pages also list the package as "Chevrolet Lumina Z34" but print the code 234, so they are not cited; the 1992 p.54 page prints its model-year field as 1892, so 1992 is not claimed; the 1991 and 1993 order guides sell the Z34 coupe as model 1WP27; the rparts GM RPO list reads Z34 as a merchandising option (1WM27 plus Z34 gives 1WP27)
GM Heritage factory kit — 1991 Chevrolet Lumina, p.72.GM Heritage factory kit — 1993 Chevrolet Lumina, p.71.GM Heritage factory kit — 1994 Chevrolet Lumina, p.41.
Z34 Factory-verified
Documented applications
This page aggregates every documented appearance of Z34 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.