Bose system or not? (RPO code and speaker grill don't match)

[Kraze]

I recently purchased a 2005 GMC Sierra 1500 SLT ext. cab. I want to install an aftermarket head unit, but I'm not sure which wiring harness to get as I'm not sure if I actually have the Bose system or not.

 

Here's the situation. I have the UQ3 RPO code, which indicates a non-bose system, but the front door speaker grills say Bose on them. The tweeters and the rear speaker grill don't say Bose (would they in the actual Bose system?). So I'm not sure if a previous owner just swapped in speaker grills and that's it, or swapped in an entire Bose system, or if the RPO code is incorrect (if that's even a possibility).

 

I read something about a harness connector for the Bose amp being underneath the cup holders. Here's what's under my cupholders, and I'm not sure if that connector is for an amp or it's unrelated:

 

 

And I don't know if you can tell anything by what the radio looks like, but here's mine:

 

 

Is this enough info to know whether or not there's the Bose system in this truck? If not, what's the easiest way for me to confirm if it's a Bose system or not?

 

Edit: Here's a link to the truck's RPO codes, if that helps at all: RPO codes

 

Thanks

[dcferguson98]

Do you have really good bass for stock speakers?? If so then you probably have Bose. if you have the Bose package then there will be a small 6.5in sub in (under) the center console

 

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[dcferguson98]

And if your truck is an extended cab and you do have Bose then the back speaker grill won't be branded with bose

 

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[newdude]

Those grilles are sold only with the entire door panel from GM. I'm betting that whoever had it last saw it was an SLT and swapped door panels to trick the next potential buyer with the BOSE grilles.

 

Best way I would think would be to check and post the part #'s off the back of either the radio or the door speakers. Bose RPO is UQ7.

 

EDIT: If that is really the build sheet out of that truck I would be somewhat concerned. You state you have a GMC Sierra. Per those codes its a Chevy Silverado. X88 is the Chevy brand identifier, Z88 is GMC.

 

PM sent.

[Chris]

Also a Bose giveaway is tweeters on the A pillars. Pretty sure all true SLT trucks in that generation had bose

[Kraze]

Thank you all for the quick responses, I appreciate it! 15HDriver was on to something. The RPO codes on the glove box sticker belong to a different truck, so that isn't my trucks actual build sheet. From what everyone is saying here, it sounds like this truck does indeed have the Bose system.

 

Edit: Ran the VIN of the glove box sticker, it's from a Chevy Tahoe. That explains a lot! Guess the glove box was swapped out at one point. I'll buy the wiring harness for the Bose system, thanks again everyone!