VERY VERY COOL!!!
Confirmed working on 2002 Deville DTS!!!
My setup is a little different than the 2001 it seems. There is only one unit to remove (it's got 2 part numbers), Part #25740426 on the side and Part#25720581 on the top. The factory cable is a different part number too, #12450885. The car phone and Onstar appear to be one unit (since there wasn't a separate phone module). Not 2 units like the pics at the beginning of this thread show. See my pics below, which may be true for 2002 and up...
I haven't searched yet, but this MAY be the digital Onstar upgraded version perhaps? It looked like it was replaced by some technician. When I dropped the trunk tray it was kind of just laying in the clips at an angle and had tape wrapped around it.
BONUS - I'm pretty sure now that was the rattle I heard behind the rear seat. Now that it's out, I'll know for sure tomorrow!
RBD's unit works like a charm, and does everything it says it will do! I have a Motorola Q and was able to voice dial, mute the mike, adjust the volume using the steering wheel controls, etc. The "End" steering wheel button doesn't do anything, the mirror buttons all work as they should.
BONUS #2 - It plays well with the GMOS-06:
Call comes in > Music mutes > Rings through speakers > pick up call with mirror button.
End call > Music fades back up to the same volume.
I do have a current general Class 2 code, (IPC U1000), and on the DIC when I cycle through the options it now says "Phone Not Present" vs. "Phone ON" when the factory unit was in. But it is totally no big deal and doesn't effect the car or unit in any way. It's one of those things that I know I did.
I spoke to RBD about it, and he's going to look into it to make it go away. My guess is that the car is searching for the missing factory phone module. I'm going to disconnect the battery this weekend and see what happens.
Oh, and in case anyone was wondering, he is also a GREAT guy, very helpful and knows his stuff.
