- 2013 Confirmed
deleted for 2014 (GM's 2014 changes)
DD4 Factory-verified
Also described as Mirror, inside rearview, compass
Also documented for BuickGMCPontiac
Documented applications
- 2005–2009 Factory-verifiedGM Heritage factory kit — 2006 Chevrolet Trailblazer, p.27.
This page aggregates every documented appearance of DD4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.