XM reception lost near cell towers - GMC Acadia Forum: AcadiaForum.net
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post #1 of 11 (permalink) Old 12-22-2018, 01:12 PM Thread Starter
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XM reception lost near cell towers

I have a 2010 Acadia SLT with factory XM radio. XM reception was great until a couple of years ago. Now it is fine in open country but when in sight of cell towers, signal is lost / in and out until towers are passed.
Radio signal has been refreshed numerous times to no avail. Every time I contact XM they offer some temporary deal and promise to escalate my issue to a higher level person, but nothing happens. I finally cancelled my service, but we enjoyed the service when it worked.
Have seen some internet posts mentioning antenna issues and some citing recent signal band changes crowding signal between sat radio and cell frequencies.
Any suggested fix is appreciated.
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post #2 of 11 (permalink) Old 12-22-2018, 01:29 PM
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I would start by checking all the antenna and radio ground connections. Loose or corroded would impact reception.

I've got 4 vehicles with SXM subscriptions. 2 in Georgia and 2 in Maryland. Have noticed no issues with reception.
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post #3 of 11 (permalink) Old 12-22-2018, 02:03 PM
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Interesting. I dumped XM after the 'free' trial because of reception problems in narrow river valleys and heavily forested areas. It didn't seem worth the $$. If there's an interference problem between cell and satellite frequencies, good luck. Cell towers are popping up all over the place. Both cell phone and satellite radio (even GPS) are very low-powered signals and are heavily dependent on 'line-of-sight' for good reception.

2007 Acadia SLT-2, 'HiYo' Silver outside, Ebony/Titanium inside, no NAV, no HUD, no errors

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post #4 of 11 (permalink) Old 12-22-2018, 02:27 PM
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The XM signal comes from satellites, which are located in many different directions from your vehicle. Direction just depends upon where your vehicle is in relation to satellite. You can receive more than one satellite at once.

There is no reason that a cell tower(or two or three) should have any impact on the XM signal. Yes, heavily forested conditions will impact to some degree. As will a narrow valley if there is not a satellite near overhear. The same thing may happen on city streets lined by tall buildings. That is why it is best to live in rural or suburban areas.


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post #5 of 11 (permalink) Old 12-22-2018, 05:27 PM
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Quote:
Originally Posted by DavidB View Post
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Any suggested fix is appreciated.
According to this wiki article, SiriusXM is supposed to launch a new generation of satellites next year. Maybe wait 'til then and renew your subscription package.

https://en.wikipedia.org/wiki/Sirius_XM_Satellite_Radio

2007 Acadia SLT-2, 'HiYo' Silver outside, Ebony/Titanium inside, no NAV, no HUD, no errors

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post #6 of 11 (permalink) Old 12-27-2018, 08:49 PM
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You're not crazy, my 07 Saturn Outlook does the same thing. Not all towers, just a few low lying ones in the city. Unfortunately one is right by the McDonald's I like to get breakfast at on my way to work 😉 My wife's 2018 Cadillac has no issues in the same location, so technology has probably changed in the last 10 years.
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post #7 of 11 (permalink) Old 12-27-2018, 10:27 PM
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Quote:
Originally Posted by schuetdm View Post
You're not crazy, my 07 Saturn Outlook does the same thing. Not all towers, just a few low lying ones in the city. Unfortunately one is right by the McDonald's I like to get breakfast at on my way to work 😉 My wife's 2018 Cadillac has no issues in the same location, so technology has probably changed in the last 10 years.
or some deterioration in your 12 year old antenna/cable connections.
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post #8 of 11 (permalink) Old 12-29-2018, 12:47 AM
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This is a known issue with AT&T and T-Mobile cell sites due to reuse of adjacent XM frequencies after FCC auctioned off unused spectrum. Search for "XM cellular interference" for more information.

--
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post #9 of 11 (permalink) Old 04-05-2019, 04:44 PM Thread Starter
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UPDATE - IS it Hardware or Signal?

I finally got fed up with XM continually telling me they were escalating my case for resolution - nothing happened so I cancelled. After 3 months, wife kept wanting XM back for hinterland trips so I renewed (we want you back for $5.00 a month plus taxes). Just drove from Fayetteville, AR to Dallas through rural Oklahoma. No lost signal unless there was a visible cell tower within 1/4 mile - then only some towers. Once past the tower 100 yards or so signal comes back strong.
Someone please tell me if its my antenna, how I can drive 100 miles through the middle of nowhere with a clear signal?
How can I find a technician with the expertise to diagnose an antenna problem if the radio works in his shop?
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post #10 of 11 (permalink) Old 04-06-2019, 07:31 PM
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How can I find a technician with the expertise to diagnose an antenna problem if the radio works in his shop?
It's highly unlikely you'll find anyone in an auto repair shop with that type of experience. The most they could for you is replace the antenna, mast, cabling, and/or receiver to 'try' a resolution to the problem.

2007 Acadia SLT-2, 'HiYo' Silver outside, Ebony/Titanium inside, no NAV, no HUD, no errors
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