04 sierra crew cab Bose / harness

Hey all......I have a 04 crew cab ...UQ7 NON y91 stereo..NO steering wheel controls either.......im planning on installing a pioneer AVIC unit....with an amp and a sub. Id like to retain the bose for the factory speakers and use my aftermarket unit and amp for the sub if possible. I could care less about the chimes (if that matters or not)......Just wanna buy the right harness 1 time and do the install.....ive had different opinions and part numbers from local folks......just like to check in with the guys who have done a similar installs....which harness do you all recommend to make this easy LOL......I appreciate any and ALL input.....thanks for looking...TUNA

the harness you'll need is the GMOS-01 the link to the part is http://www.metraonline.com/part/GMOS-01

GMOS 01 is for a non amplified system.

thanks MTXtech for taking the time to post that link. I did check it out and its for Non amplified models. Thanks "I am an Idiot" for pointing that out as well. I have the basic Bose amp (non-lux edition) which id like to retain. So from what im reading I need to use this set up to do everything i need (GMOS-04) here is the link..http://www.metraonline.com/part/GMOS-04.....could anyone else possibly confirm this? Thanks again for the help......TUNA

Im sorry guys, i actually failed to notice that it was boss amplified.