- 2004–2006 Factory-verified
the 2006 list says not to use after 2000 model year and to use UE0; the 2005 list reads only "GPS - Delete".
UE4 Factory-verified
Also documented for BuickCadillacChevroletGMCOldsmobilePontiac
Documented applications
This page aggregates every documented appearance of UE4 in the Hummer reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.