01 Yukon SLT, how do I tell if it's Bose or No-Bose?

[gooffeyguy]

Thinking of replacing the head unit on our '01 but need to know how to tell if it has the Bose option.

I have Onstar, although it doesn't work because way back when they switched to a digital system they said it couldn't be converted.
It has the CD player with the tape player seperate and below the 12v outlets
I have a rear subwoofer
No steering wheel controls

I'm looking on Crutchfield and it gives the following options:
-with Bose and Onstar
-with Bose, without Onstar
-without Bose, with factory sub
-without Bose, without factory sub

Also, if I don't have Bose, is there still a factory amp? The rear sub stopped working and the sound coming from the door speakers has no bass.

What are the RPO codes for the different options?

 

[Fless]

My front door speaker grills have a BOSE emblem on them with an RPO code of UQ7. The other stuff I don't know.

 

[Doubeleive]

if you have bose it will say it basically everwhere, speaker grills, tweeter grills, and on the radio face (usually), 01 should have a amp behind the glove box

 

[gooffeyguy]

If it's not Bose would it still have an amp somewhere?

Trying also to figure out why there's no bass and why the rear sub has seemed to stop working

I'm guessing it's not Bose, doesn't say it on the head unit

 

[Doubeleive]

If it's not Bose would it still have an amp somewhere?

Trying also to figure out why there's no bass and why the rear sub has seemed to stop working

I'm guessing it's not Bose, doesn't say it on the head unit

open the glove box and look behind it with a flashlight, if there is a amp it should be there and look like this one
https://www.ebay.com/itm/2001-2002-...:Tahoe&hash=item1a7ff4c5a8:g:0~YAAOSw-otdKMzZ

 

[gooffeyguy]

Thanks, I'll look after the wife gets home. She's got it with her today.

Noticed on that listing it also says
"enhanced speaker system (option UQ3)"

I'll also look at the RPO codes

 

[gooffeyguy]

My 2001 doesn't have any identifying "Bose" on the radio or speaker grills.

It does have that amp behind the glovebox and RPO UQ3

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[Doubeleive]

same thing my 00 had, most likely the subwoofer speaker went bad in back, replacement options are limited but can be done, there is a couple shallow oem type replacements out there, you can remove the old subwoofer speaker and connect any speaker to the terminals to confirm there is still a signal.

 

[gooffeyguy]

same thing my 00 had, most likely the subwoofer speaker went bad in back, replacement options are limited but can be done, there is a couple shallow oem type replacements out there, you can remove the old subwoofer speaker and connect any speaker to the terminals to confirm there is still a signal.

Yeah, I have some old subs on the shelf in the garage that I can use to test. Just have to figure out how to get to it... Lol

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[Doubeleive]

Yeah, I have some old subs on the shelf in the garage that I can use to test. Just have to figure out how to get to it... Lol

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

open the rear hatch, take the long trim off the bottom where the carpet is, then the long piece up top, then the passenger side pillar trim, then you can take passenger side trim out to access the speaker