- 2003–2009 Factory-verified
T84 Factory-verified
Also described as Headlamps, right-hand rule of road, E mark, rectangularHeadlamps, right-hand, rule of the road, E markHeadlamps, right-hand rule of road, E-MarkHeadlamps, right-hand rule of road, E-marked (export)
Also documented for BuickCadillacChevroletHummerOldsmobilePontiac
Documented applications
- 2000, 2001 Factory-verified
- 1999–2001 Factory-verified
- 1998–2002 Factory-verified
- 1999–2002 Factory-verified
- 2001–2002 Factory-verified
- 2000–2002 Factory-verified
- 2000–2002, 2004–2006 Factory-verified
- 2007–2009 Factory-verified
The 2009 list adds do not use after 2009 global/new major programs.
This page aggregates every documented appearance of T84 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.