- 1986, 1992 Single-source
Firebird years: thirdgen.org label decodes 1986; 3rdgenformula option pages 1992
T93 Single-source
Also documented for ChevroletGMC
Documented applications
This page aggregates every documented appearance of T93 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.