- 1987 Confirmed
gnttype.org's 1987 option sheet
TT5 Factory-verified
Also described as Headlamps, halogen, 2
Also documented for ChevroletGMCOldsmobilePontiacSaturn
Documented applications
- 2005–2007 Factory-verified
This page aggregates every documented appearance of TT5 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.