- 1985–1987 Single-source
years from the OSG; GM's later lists reuse QDX for a 155/80R13 tire
QDX Factory-verified
Also described as Tire, all, 155/80R13 BW NY/ST TL ALS
Also documented for Chevrolet
Documented applications
- 2009 Factory-verified
This page aggregates every documented appearance of QDX in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.