My build sheet for 2007 Suburban has:


UK3 - STEERING WHEEL RADIO CONTROLS
UK6 - REAR SEAT AUDIO CONTROLS
UQ3 - ENHANCED AUDIO SPEAKERS
US8 - AM/FM STEREO WITH CD/MP3

Does this have a separate amp? I just replaced all four door speakers and 3 of them are working now. (None of the front or rear door speakers had sound.

Oddly enough two fronts have sound and left rear door works.

Also is the XM tuner inside the dash unit or is it separate?

Part numbers of the dash unit are GM 25782841 and Delphi 28076188

Thanks for any help on this.

 

R9x - xm standard
u2k - xm satellite radio - service fee extra. 1st 3 months incl.

 

Judging by the codes I found, if it says With Amplifier, it has it, if not then no.
I looked through the entertainment electrical connections data and found nothing that called out a satellite or XM receiver connection, so that would lead me to believe it is built into the radio head unit.


RPO Code List (Escalade ESV/ Suburban/GMC Yukon XL)

UK3
Control Steering Wheel, Accessory
UK6
Radio Control, Rear Seat and Earphone Jacks
UL2
Frequencies, European
UL8
Frequencies, Saudi Arabian
UN9
Radio Equipment, Suppression
UQA
Speaker System, Premium Audio Branded With Amplifier
UQS
Speaker System, Premium Audio Branded With Surround Amplifier
UQ3
Speaker System, Enhanced Audio
US3
Antenna, Diversity
US8
Radio AM/FM Stereo, Seek/Scan, CD, Auto Tone, Clock, ETR, MP3, RDS
US9
Radio AM/FM Stereo, Seek/Scan, RDS, Multiple Compact Disc, Auto Tone Control, Clock, ETR, MP3
UT7
Provisions Auxiliary Electrical System Ground
UVA
Radio AM/FM Stereo, Seek/Scan, Auto Tone, CD, CD-R, MP3, DVD, Clock, ETR, RDS
UVB
Radio AM/FM Stereo, Seek/Scan, Auto Tone, CD, CD-R, MP3, DVD, NAV, Clock, ETR, RDS
UVC
Camera, Rear View
U19
Speedometer Instrument, Kilo and Miles, Kilo Odometer
U2K
Digital Audio System S-Band
U3R
Radio AM/FM Stereo, WX, Seek/Scan, CD, DVD, NAV, Clock, DSP, RDS, W/Voice Rec Micro
U3U
Radio AM/FM Stereo, Seek/Scan, DVD, CD, Clock, ETR, Navigation, Voice Rec, MP3
U34
Display, Celsius Temperature
U42
Entertainment Package Rear Seat
U84
Antenna Body Side Window, Radio

 

I bought unlocked dash radio unit on eBay.

Rear seat headphones only have one channel working. Just some static on the dead side.

Hopefully that will fix it.

 

When I replaced speakers 3 of the 4 worked for awhile. Then driver door speaker quit working. New head unit arrived and it did not change anything.

What else could be cutting out the speakers? The rear seat controls?

 

Its possible, but I don't think the rear controls have control over the vehicle speakers, only head phone channel...but I won't swear to that..

You can check to see if you have an amp, as it should be located in/under the center console

 

Last night I took driver door panel off and and somehow got the that speaker to work. The connector Crutchfield sent may have been loose. I pushed it together and taped it.

Still nothing from right rear door. If you stick headphones in the rear seat controls that kills the rear door speakers. That is what makes me suspect the rear seat controls.

I wanted to check continuity of the speaker wires, but they change colors between the Head unit and the speakers.

 

If your xm tuner is seperate it would be located behind the glove compartment. Just push up the tab to your glove compartment and the glove will come down so you can check.

As far as speakers working I would check all connections. Is your radio a Bose unit? If it is a Bose unit you will have an amplifier located under the center console.

 

Not a Bose system.

I found correct replacement head unit, but that did not fix it.

I've checked the connections as much as I can. I'll probably end up taking it to a car audio place.