- 1999–2001 Factory-verified
The 2000–2001 lists print it Trim Interior Design (QB).
IQB Factory-verified
Also documented for BuickCadillacPontiac
Documented applications
- 1999 Factory-verified
This page aggregates every documented appearance of IQB in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.