If you have come accross this blog then you are in the same boat as me. You have purchased the 2009 G8 GT and realized that you do not have the Bluetooth that you were hoping for. There has been some breakthrough recently and I have compiled tons of data to help those of you in need of help. I have asked 3 important questions and here are my findings. G8 community is great for information.
Resource link- http://www.g8board.com/forums/showpost.php?p=404735&postcount=202
Chris – AKA GTPprix runs the site www.whiteautoandmedia.com and he can preform the flash if you find a BT box. You would ship your unit to Chris and he will flash it and send it back.
The Three Questions that I asked are:
Q. How is the quality of the BT in the car. Can the other person tell you are on BT? I know that the ford sync bt is crap when it calls to a landline at work.
A. So far everyone has been raving that the sound is great! Quotes: The BT quality, in my opinion, is excellent. I can hear the caller perfectly (sometimes it takes adjusting the volume), and whenever I tell someone “by the way, you’re on speaker”, they respond with “oh, it doesn’t seem like it”. The quality of your cell connection is what matters – a poor connection obviously yields poor results.
Q. What vehicles can i search for that have the two modules that work? GM Part # 25984444 and its supersedent 20783877 these are the ONLY two modules. It was to be believe 25984444 is the original part they used when they first introduced the Bluetooth option. It is no longer available. 20783877 is the updated part that has some software revisions to help it be more compatible with vehicles that have the factory in dash navigation systems. The original module made some of the navigation features not function. If you turn up the results when calling a junk yard “Communication, OnStar (opt UEl), (left side of dash)“, or “Communication, (left 1/4 wheelhouse)” Both have ID 25984444. Do not despare the descriptions are just the placements on different vehicles you should have no problems with either. * Don’t blame me if they don’t.
A. 2009 Model Year Arcadia\Enclave\Outlook\Traverse/Sierra\Silverado\Tahoe\Suburban\Yukon
Results from the forums are “Ok, I did some experimenting, bought a GM p/n #25984444 from a different vehicle (09 Buick Acadia, I called around to local junkyards), bought the Bluetooth antenna from the dealer ($40)”
Q. What is the Bluetooth Antenna that is needed?
A. Part Number 15938939 is a 1″ x 1/2″ plug in bluetooth antenna that goes right onto the Onstar box. It is not the roof antenna or anything else. It is very small and fragile.
GM PART # 15938939 – GMPARTSDIRECT.com
CATEGORY: Power Radio Antenna Module
PACK QTY: 1
CORE CHARGE: $0.00
GM LIST: $39.02
OUR PRICE: $23.13
Q. What did you pay for your 25984444.
A. Junkyard charged $120 for the module 20783877 . Junkyard wanted 310 for 25984444. Your Milage my vary.
Q. Has anyone taken install pics of the new unit and the antenna etc?
A. Working on getting someone to post these. Or i will take images when i get retro fitted.
Images… I will post here as a mirror.
Q. Does your Onstar # change?
A. Mine actually changed twice, once during setup and once sometime between setup and now. What is ironic is that my original, stock # was a 203 area code, and the updated 2 numbers are 860 area codes (those are CT’s two major codes, they recently added more).
Q. Do you still get the Onstar emails that come monthly.
A. The Onstar emails still come monthly. The month that I did the swap, it came a little late (I imagine they redid the cycle in their system or something). I get the warning “action suggested” on my engine & transmission system and the emissions system, but GTPPrix described a possible fix for this somewhere that I have yet to try.
Disclamer: Regarding finding a box – those who find them are either lucky or clever. Many junkyards, especially smaller ones, don’t carefully inventory all of the boxes they get. They simply label them “computer module”, and some even toss them because they can be a lot of trouble to match up with exact software revisions and date codes. Also, remember that many people entering the parts into the database may not be the brightest bulbs on the planet, so they are prone to put in incorrect part numbers or even omit information. My advice on this is to find all of the yards you can with any 09 vehicle with the box and have them actually look at the car or parts to find it. These have to still exist out there; not everyone in an 09GM is a good and lucky driver