- 1970s Confirmed
see ZJ9
U25 / U26 / U27 / U28 / U29 Confirmed
Also on its own page U25 U26 U27 U28 U29
Documented applications
This page aggregates every documented appearance of U25 / U26 / U27 / U28 / U29 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.