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Old 12-29-2012, 07:41 AM   #1
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Default What is this?

I will be installing subwoofers rear deck mount (IB) in my 2004 Lesabre limited. I found this curious looking device mounted on the under side of the deck that looks to me like a G-load sensor. Possibly to trigger an airbag? In wich case mounting subs next to it probably not a great idea. Any ideas what it is?

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Old 12-29-2012, 08:40 AM   #2
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Maybe OnStar GPS antenna? Hard to tell.

If you could get a better picture of the label, I might be able to tell.
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Old 12-29-2012, 08:49 AM   #3
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I doubt it airbags stuff will usually have yellow connector so you know it is.
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Old 12-29-2012, 09:38 AM   #4
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Thanks. I didn't know that about the yellow connectors.
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Old 12-29-2012, 09:47 AM   #5
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I think your right Mike. On closer look the wire may be coaxial. Guess I can that out being that the onstar is anolog on an 04.
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Old 12-29-2012, 10:24 AM   #6
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thats the gps locator the govt uses to track you.


i would guess heat or sun load sensor for hvac, you can get the gm pn off of it and google the number
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Old 12-29-2012, 10:57 AM   #7
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Does the car have stability control? That is where the Yaw sensor is on the Bonnevilles of that era, which would explain why it looks like a G Load sensor.
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Old 12-29-2012, 12:51 PM   #8
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Actually guys, I'm pretty sure that is the compass. It could also include GPS, but the onstar module is on the back of the seat next to the Monsoon amp if you have one. Try placing a magnet on and/or around it and see what happens. You'll be driving in circles, literally!
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