- 1998–2000 Factory-verified
the 1999–2000 lists print R14; the 1998 list, XHM and YHM read R15
ZHM Factory-verified
Also described as Tire, spare, P235/75R15 RWOL
Also documented for CadillacGMC
Documented applications
- 1997–2002 Factory-verified
the 2001–2002 lists read "P235/75R15-108S WOL R/PE ST TL ALS (X/Load)"
GM Heritage factory kit — 1997 Chevrolet Express, p.42.
- 1998–1999 Factory-verified
the lists print R14; XHM and YHM read R15
- 1998–1999 Factory-verified
the lists print R14; XHM and YHM read R15
This page aggregates every documented appearance of ZHM in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.