Carrier, spare tire, with hoist

Years 1986–87 Models 1 Factory citations 2

Also documented for Chevrolet

Documented applications

Safari — First generation (1985–1994)

1986, 1987 Factory-verified

shared M-body code; cited from the joint Astro/Safari pages of the Astro kits.

GM Heritage factory kit — 1986 Chevrolet Astro Van, p.12.
GM Heritage factory kit — 1987 Chevrolet Astro Van, p.26.

This page aggregates every documented appearance of P18 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.