- 2014 Factory-verified
ZWF Factory-verified
Also described as Tire, spare, LT265/70R18E all-season, blackwall
Also documented for Chevrolet
Documented applications
- 2015, 2018–2019 Factory-verified
2015 marks: Sierra, SLE, SLT: O; 2018: GM's 2018 Sierra 2500HD order guide; 2019: GM's 2019 Sierra 3500HD order guide
- 2027 Factory-verified
only in: 2500 HD; Pro, SLE: S; SLT, AT4, AT4X, Denali, Denali Ultimate: not offered
This page aggregates every documented appearance of ZWF in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.