Mystery Box Behind Glove Box

[991500Burb]

Can anyone help me identify what this box is. It has an antenna lead that used to go to an antenna mounted on the read pass window. It has a GM labeled cable going into it. This Suburban used to have a cell phone mounted in the center console so maybe it was for that? It sure looks factory. Its on my 1999 GMC Suburban K1500.

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[991500Burb]

It's located behind the glove box.

 

[Supercharged111]

Sub'd as I'm curious now too. It sure sits in that plastic tray like it was always meant to be there. Wonder if it isn't some kind of factory amp?

 

[991500Burb]

Sub'd as I'm curious now too. It sure sits in that plastic tray like it was always meant to be there. Wonder if it isn't some kind of factory amp?

It does have the Bose sound system. I don't know why there would be an antenna for it? I thought it might have been for OnStar but I don't think that was availible in 99.

 

[Caman96]

An amp having the cooling fins.

 

[991500Burb]

It does have the Bose sound system. I don't know why there would be an antenna for it? I thought it might have been for OnStar but I don't think that was availible in 99.

Sorry not Bose I don't think. I just says Delco Electronics on the radio.

 

[991500Burb]

An amp having the cooling fins.

That's what I thought but why an antenna?

 

[AK49BWL]

The BOSE amp doesn't use a DB25 connector anyway. If not OnStar then I would have to guess it's for the cellular... Or there's also references to a "Vehicle Interface Unit", but I can't find any info about this. Does remind me of OnStar tho, perhaps early implementation?

 

[Caman96]

Radio Amplifier 97-99 Tahoe/SUBURBAN 1500 2500 09365789 | eBay

Used amplifier removed from 1999Tahoe.

www.ebay.com

 

[AK49BWL]

Note the covered sticker in that link...

Visible in this one. It's OnStar, and has nothing to do with amplification of anything related to radio audio.

1997-2000 Cadillac Escalade Yukon Denali GMC Chevrolet 09365789 Radio Amplifier | eBay

Find many great new & used options and get the best deals for 1997-2000 Cadillac Escalade Yukon Denali GMC Chevrolet 09365789 Radio Amplifier at the best online prices at eBay! Free shipping for many products!

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GM Part Number 09365789 ... And there's no reliable info on this module anywhere. Everyone seems to think it has something to do with radio amplifying. But a Suburban's audio amp is under the driver seat.