XM antenna/Onstar

digitald · 03-11-2008, 12:40 PM

OK, well since I finally got my baby, I was looking around again at the posts about the radio installs, I'm going to install the D3 as well but was wondering if anyone has tapped the stock antenna yet so taht we don't need a secondary antenna fro the XM radio

Goal:
Avic D3
bluetooth module
retain steering controls
retain Onstar
XM radio
GPS
no visible changes to car except the HU itself.

I'm pretty sure i got the list of materials right, just really want to tap that factory antenna

bryguycbr · 03-11-2008, 01:32 PM

I think the stock radio XM system gets its reception from the ONSTAR antenna.

digitald · 03-11-2008, 01:59 PM

it does, i'm just not sure if anyone had figured out a way to split the signal yet

ChgoBlues · 03-11-2008, 04:36 PM

OnStar has a seperate module that over rides the radio when it is in use even though you can adjust volume using the radio controls. Not really sure you can split the signal since the speakers are used during any OnStar communications.

I know there is seperate programming for the radio and IF a radio has to be replaced that has OnStar and the vehicle has XM, both divisions have to reactivate their part with the new radio ID. Was a complete pain when my stock radio had to be replaced in my Ion RL.

And as far as the steering wheel controls, I'm not sure if those are programmed with the radio programming or the body control module or if they are programmed to communicate with one another along with the signals from radio signal, OnStar and XM through the one antenna. I remember it took GM a couple of model years to get the antenna working to accept all signals so there weren't multiple antennas on the roof which they were doing prior to the current setup which is digital and not analog.

jstkilntim · 03-11-2008, 10:48 PM

Not a good picture, but you can barely see the XM & Navi antennas on top of the vents. They get perfect reception under the plastic dash piece. Just be sure to use the piece of metal that comes w/ them. (Can't remember if it came w/ the HU or XM)

digitald · 03-12-2008, 09:32 AM

damn, not what i was imagining, btu at least its out of sight like i wanted, thanks man.

next thing is to buy teh D3, lol

03-11-2008, 12:40 PM	#1 (permalink)
digitald Member Join Date: Mar 2008 Posts: 36 My Photos: (0)	XM antenna/Onstar OK, well since I finally got my baby, I was looking around again at the posts about the radio installs, I'm going to install the D3 as well but was wondering if anyone has tapped the stock antenna yet so taht we don't need a secondary antenna fro the XM radio Goal: Avic D3 bluetooth module retain steering controls retain Onstar XM radio GPS no visible changes to car except the HU itself. I'm pretty sure i got the list of materials right, just really want to tap that factory antenna

03-11-2008, 01:32 PM	#2 (permalink)
bryguycbr Member Join Date: Dec 2007 Location: Maple Valley, WA Posts: 36 My Photos: (0)	I think the stock radio XM system gets its reception from the ONSTAR antenna. __________________ Red Hot Chilli Pepper 2008 RedLine MagnaFlow

03-11-2008, 04:36 PM	#4 (permalink)
ChgoBlues Senior Member Join Date: Mar 2007 Location: Boston, MA Posts: 592 My Photos: (6)	OnStar has a seperate module that over rides the radio when it is in use even though you can adjust volume using the radio controls. Not really sure you can split the signal since the speakers are used during any OnStar communications. I know there is seperate programming for the radio and IF a radio has to be replaced that has OnStar and the vehicle has XM, both divisions have to reactivate their part with the new radio ID. Was a complete pain when my stock radio had to be replaced in my Ion RL. And as far as the steering wheel controls, I'm not sure if those are programmed with the radio programming or the body control module or if they are programmed to communicate with one another along with the signals from radio signal, OnStar and XM through the one antenna. I remember it took GM a couple of model years to get the antenna working to accept all signals so there weren't multiple antennas on the roof which they were doing prior to the current setup which is digital and not analog. __________________ 2008 Sky Red Line Midnight Blue/Black/5 spd Splash Guards Opel Antenna 2006 Ion Red Line Pacific Blue/Black/5 spd Stage 2/Extrudehone Exh Manifold Front Grille imSaturn:http://www.imsaturn.com/profile/Rob41 Last edited by ChgoBlues : 03-11-2008 at 04:40 PM.

03-11-2008, 10:48 PM	#5 (permalink)
jstkilntim Member Join Date: Mar 2007 Location: Jacksonville, FL Posts: 88 My Photos: (0)	Not a good picture, but you can barely see the XM & Navi antennas on top of the vents. They get perfect reception under the plastic dash piece. Just be sure to use the piece of metal that comes w/ them. (Can't remember if it came w/ the HU or XM) __________________ 2004 Velocity Red RX-8 JDM MS Body Kit 18X8 Rays Gram Light 57 Pro's RB REVi Intake, Exhaust, Springs, Sway Bars & End Links SS Braided Brake Lines & Painted Calipers JL Audio, AudioControl, Eclipse & Fosgate Tint, Red Line Fluids & Zaino

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Remove Advertisements Sponsored Links
Saturn Sky Forum Advertisement

03-11-2008, 01:59 PM	#3 (permalink)
digitald Member Join Date: Mar 2008 Posts: 36 My Photos: (0)	it does, i'm just not sure if anyone had figured out a way to split the signal yet

03-12-2008, 09:32 AM	#6 (permalink)
digitald Member Join Date: Mar 2008 Posts: 36 My Photos: (0)	damn, not what i was imagining, btu at least its out of sight like i wanted, thanks man. next thing is to buy teh D3, lol

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)