Factory Bose Amp questions

[NotQuiteanSS]

OK my factory amp is toast. Quick question? What is the difference between a 996661 amp and a 991234 factory bose amp?

Could only find the 99661's in the junk yard this morning.

 

[kses123]

20811234 would be the newer version. It replaced 15186661.

 

[915_Tahoe]

20811234 would be the newer version. It replaced 15186661.

@kses123 is correct.
gm#15186661 is replaced by gm#20811234

 

[NotQuiteanSS]

Any major differences?

 

[Doubeleive]

If it's just a superseded part number then it should operate and fit the same

 

[Doubeleive]

how did you determine that the old amp is bad?

 

[BG1988]

how did you determine that the old amp is bad?

head unit powered up and no sound came out might be why ?

 

[NotQuiteanSS]

Yes that is exactly it. I had to run a new wire from under the dash, did not wanna cut the factory radio harness to make the R.A.P. work, as there was not a provision for it on the
Metra AX-GMLAN29-SWC GM Data Interface with SWC harness. Please see attached photos.

So I went to the junk yard and found a 1234 amp, out of a 2011 Suburban, and still no luck. So now what? I am completely stumped. The lil black box that came with the
Metra harness (please see photo) does not light up, at all, like it should.

Anyone have the factory wiring diagram so I can match up that way?

 

[Doubeleive]

head unit powered up and no sound came out might be why ?

that doesn't mean anything other than you have no sound, could be a variety of things.

 

[Doubeleive]

Yes that is exactly it. I had to run a new wire from under the dash, did not wanna cut the factory radio harness to make the R.A.P. work, as there was not a provision for it on the
Metra AX-GMLAN29-SWC GM Data Interface with SWC harness. Please see attached photos.

So I went to the junk yard and found a 1234 amp, out of a 2011 Suburban, and still no luck. So now what? I am completely stumped. The lil black box that came with the
Metra harness (please see photo) does not light up, at all, like it should.

Anyone have the factory wiring diagram so I can match up that way?View attachment 246888 View attachment 246889 View attachment 246890

the bose amp is digital, it requires a digital signal which is why you have to use the metra adapter, the metra converts the signal from the aftermarket head unit to a digital signal that the bose amp recognizes. If the metra adapter isn't lighting up then it probably isn't working. no amount of wiring it any other way will make the amp come on.

 

[Doubeleive]

I would say call metra and they can help you troubleshoot and verify if there adapter is working or not.

 

[NotQuiteanSS]

Anyone have a diagram of what the factory wires are?

2011 Tahoe, no nav, with bose, xm, and on-star

 

[Doubeleive]

Anyone have a diagram of what the factory wires are?

2011 Tahoe, no nav, with bose, xm, and on-starView attachment 246945

THE GM UPFITTER website will have them, but like I stated in your other post the amp is digital you have to use a adapter. you can test the amp with a tech2 if you have access to one.