- 1998–2004 Factory-verified
the 2003–2004 lists omit second row
AT5 Factory-verified
Also documented for BuickCadillacChevroletGMCPontiac
Documented applications
This page aggregates every documented appearance of AT5 in the Oldsmobile reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.