Help choosing right Wiring Harness/ radio replacement module

[Tinboye]

I been trying to get the parts i need to save on the costs a bit. I have the trim kit and the antenna adapter already. The Module is where i am stuck a bit.

I have been doing some digging and there seems to be a bunch of options based on whats available in vehicles

My truck is

2007 Chevrolet Silverado 1500 Classic LS Extended Cab Pickup 4-Door 4.8L 294Cu. In. V8 GAS OHV Naturally Aspirated.

It does not have the premium bose but the standard bose. the difference between the 2 is the amplifier's are different.

SilveradoSierra.com • *UPDATED* I DID IT! solved the bose system upgrade issues : Mobile Electronics

my amp looks like the standard bose amp.

I do not have onstar, no XM radio or anything like that

So from doing research: RP3-GM11

Pac-Audio.com Product Details | iPod Integration for your car and More by Pac-Audio - Connecting you to the future should be the one I need

Now here is where im a bit confused and maybe can help me answer a question.

I see this harness has rca cables on the harness. Im assuming these go into the deck that i own. If that is the case, then is it not possible to also run an after market sub/amp as well as retain the bose system/amp?

basically I want to retain the bose amp/sub/6 speakers, and later add a sub/amp, but do not want to have to install anything different or add anything different. I would run the rca's from my deck to the back of my truck, I already have a power kit installed with a capacitor.

Can anyone clear this up for me. A local company here wants to charge me 350CAD just for the harness (not including install)

I had gotten a kit off ebay with the trim kit and radio antenna adapter and the module which I was told it would work with the bose standard system. which is the LCGM24 but i believe this module will not retain the bose system.

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