Harness, wiring, trailer, heavy duty, 7 lead

Years 1988, 1991 Models 1 Factory citations 2

Documented applications

C/K pickup — GMT400 (1988–2000)

1988, 1991 Factory-verified

the 1991 option page prints it included with the Z82 trailering package

GM Heritage factory kit — 1988 Chevrolet Truck, p.140.
GM Heritage factory kit — 1991 Chevrolet Truck, p.36.

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