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2008 Hummer H2 Navigation GPS Location

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  #1  
Old 11-06-2022, 08:16 PM
Brunob00's Avatar
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Default 2008 Hummer H2 Navigation GPS Location

I am upgrading a Hummer 2008 standard radio to the OEM navigation system, and I need to install the Antenna Assembly - GM (25918632). I have searched and searched... does anyone know where this mounts to? I cannot find the OEM mounting position. Thanks!
 
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Old 11-07-2022, 08:00 AM
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Mine is on the roof above the driver next to the sunroof

my truck has onstar also which may be why the antenna is different

I believe this antenna does both GPS and Onstar

GM 25775191

Neal
 

Last edited by legerwn; 11-07-2022 at 08:08 AM.
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Old 11-07-2022, 08:09 AM
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on trucks I've had to work on that type antenna its been mounted over the glovebox under the dash skin

Neal
 
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Old 11-07-2022, 09:47 AM
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Right... I am pretty sure that is where it is located on the H3... so I checked that location, and I can see the airbag, and then the mounting brackets for the grab bar above them... but I don't see a plate to mount the square GPS antenna. Maybe the mount is not provided with the UVA option, and only on the UVB option? I searched to the left of the radio opening, and don't see much. In the center top is where the dash speaker is mounted. to the top left, I don't see much. Then provided a photo behind the dash front-right, and all I see is the airbag at center and them mounts for the grab bar above.





 
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Old 11-07-2022, 11:10 AM
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This might help - drawings and part lists. You will need to pick the correct one though. I do know that first one shown on the passenger side roof with a small mast is an 03/04 only thing - those had the AM/FM antenna on the roof instead of the fender. Check the below link.

https://nemigaparts.com/cat_spares/epc/hummer/hm2-n/09/
 
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Old 11-07-2022, 12:54 PM
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@MixManSC - thanks so much... they had the diagram... it mounts under the Upper Dash Panel in front of the Driver. Makes sense so that it has a clear view through the windscreen. Here is the big question. My Upper Dash Panel, like most, has small cracks in it... and I am super hesitant to pull it out as that part is impossible to find a replacement for. It also has a ton of clips. Anyone have some advice on how to get the Upper Dash Panel out without cracking it? Is it even possible? Worst case I could just stick the antenna in an open spot under the dash and hope for reception... as I will really never actually use the navigation... just want to have the stock functionality in the H2. @HellHoof - had mentioned in another thread that he had reached out to Dorman to see if they would start manufacturing replacements, but not sure if they ever started. His photo of a completely cracked panel that he tried to remove from his Avalanche scared the Cr*p out of me!

Thoughts?


 
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Old 06-09-2024, 03:54 PM
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Pulling this back to the top - Anyone replace the GPS in a 2008/2009 H2? Do I need to pop the Upper Dash Panel off, or does it install some other way?
 
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Old 06-10-2024, 03:42 PM
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Originally Posted by Brunob00
Pulling this back to the top - Anyone replace the GPS in a 2008/2009 H2? Do I need to pop the Upper Dash Panel off, or does it install some other way?
I had a New OEM NAV Radio installed and programed at the the dealer. They also replaced the NAV Antenna also. Not sure but I think you can get it in there without pulling the top dash, Mine is a 2009 SUV H2. On a side note. Be careful when unplugging that Antenna from the Radio. It's kind of a Funky connector.
 
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