03 Z71 Tahoe with Bose: Help!

You don’t need to go to the amp to do all of this. The easiest way to do it and to be sure you have the correct wires is to tap into both rear speakers right before the actual speaker. Then connect them to the high to low converter and you will have your signal. Then run your power and you should be good to go.

westbayou wrote:

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Wouldn't tapping into the rear speakers at the speaker require pulling off the entire door skin?  Sounds pretty involved to me.  In the 03' Tahoe Bose system, there is no factory sub, so I can't tap into that output.  The crossover is internal to the amp, so I question whether or not to tap the input or the output to get to a full signal, but now I am reading that the input is some kind of screwy "series 2" signal?  Almost would have been worthwhile to have jsut gotten the basic stereo and redone the whole thing! 

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It's not available yet, but hopefully soon.  PAC is making an adpater that should simplify the install:

The C2A-GM24 allows you to add a 2 channel aftermarket amplifier for GM vehicles with Class II data bus. What makes the C2A-GM24 unique is that is takes the fixed level audio signal from the factory head unit before it gets to the Bose® amplifier and gives you a variable output. The C2A-GM24 outputs are digitally controlled by the headunit's volume knob. You get full range audio signal, not a Bose® specific equalized output, highpassed or lowpassed output.

• 2 channel RCA outputs with left and right level adjustments for matching aftermarket amplifier/speaker audio signal to factory speakers.
• User selectable to fade out when adjusting factory radio to front or to rear. Or select to be non-fading output.
• +12volt remote turn-on output.
• Plug & Play, no hard wiring required

https://www.pac-audio.com/products/oem1.htm#c2agm24

I am having a similiar problem.  One - I have a 2003 tahow with the bose sound system.  I just bought a stock 2002 sub enclosure from ebay.  I would like to add an amp and a sub.  Is the C2A-GM24 what I need for this? 

2 - I would like to use the AUX function on my stereo. I know that this is usually used for the XM radio but there has to be a way to connect something else to this input.  Maybe an MP3 player.

Apparently the c2A-GM24 is what you need to do it without tapping into any wires.  I used an SMI-15 and it works great and was less expensive.  I caved in and bought a PAC Tr-4 to create a remote wire.  It was 13 bucks, and now I don't have to rig anything up through the fuse box.  The strereo sounds great.  I just have a Kicker Comp 10 in a sealed box.  I didn't feel like messing with that factory sub spot in the back because it will only accomodate an 8" sub.

The SMI-15 (from PAC) was extremely easy to wire into the Bose amp outputs.  Access was easy through the center console, and you tap into the wires on the harness with the blue clip.  Tan/Grey, and Light GREEN/ Dark Green.  The remote wire was the thing giving me the headache, but the TR-4 solved that easily.  Wish I could have gotten a c2A, but this worked just fine.

I just do not want to eat up any space in the back with an extra enclosure and I do not wnat to tempt any shady characters.

Thanks for the info.  I just want to make sure I understand everything.......

I need to buy the c2a-GM24 OR the SMI-15.  Then remove the cupholder to access the Bose amp.  Which one is the Bose amp?  I am guessing it is the only one with a blue clip.  The TR-4 is just to allow me to hook up the remote wire right?

That's it?  If so that is very cool!

Thanks again!!!

Yup, and either or thing.  But the C2A isn't available yet, so unless you want to wait, go with the SMI-15 and TR-4.  The SMI gives you an RCA connection, the TR-4 a remote wire.  Really easy installation.  The Bose amp is the only one under the storage box in the center console.  You will need to remove it to get to the harness plugs.