Trailering towing package

Years 1970–79 Models 2 Factory citations 1

Also described as Trailer towing package

Documented applications

Camaro

1970s Confirmed

lower gears on base models

Nova / Chevy II

1973–1974 Factory-verified

GM Heritage factory kit — 1974 Chevrolet Nova, p.54.

This page aggregates every documented appearance of ZJ4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.