Trailblazer Rearview mirror upgrade | Autodimming/compass/temp Mirror install

How to upgrade to an autodimming rearview mirror with compass and temperature readouts on any GMT360 platform vehicle (full list below)
How to calibrate the compass: • How to calibrate The c...
2005 Chevy trailblazer LS short wheel base shown. Long wheelbase and late model vehicles have a different connector on the fender for the temperature sensor but typically use the same pin placement.
Some early models do not contain the 16 pin square connector, the mirror can be upgraded but the wiring will have to be done manually, it will not be plug and play.
Onstar mirrors can be added to non onstar vehicles but the buttons will not do anything.
Applies to:
02-09 Chevrolet Trailblazer,
02-09 Gmc Envoy,
02-04 Oldsmobile Bravada,
03-07 Isuzu Ascender,
04-07 Buick Rainier
05-09 Saab 9-7X
Parts:
Gentex Autodimming mirror (compass only w/onstar) : 015607
Gentex Autodimming mirror (compass and temperature w/ onstar) :
Ambient temperature sensor (green plug) : GM 15035786
Alternate ambient temperature sensor (grey plug) : GM 90477289