04 sierra crew cab Bose / harness

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=142929
Printed Date: May 13, 2025 at 7:20 PM

Topic: 04 sierra crew cab Bose / harness

Posted By: bigtuna
Subject: 04 sierra crew cab Bose / harness
Date Posted: April 29, 2017 at 6:55 PM

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

Replies:

Posted By: mtxtech
Date Posted: May 01, 2017 at 3:50 PM

the harness you'll need is the GMOS-01 the link to the part is
https://www.metraonline.com/part/GMOS-01
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Posted By: i am an idiot
Date Posted: May 01, 2017 at 4:49 PM

GMOS 01 is for a non amplified system.

Posted By: bigtuna
Date Posted: May 01, 2017 at 9:12 PM

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..https://www.metraonline.com/part/GMOS-04.....could anyone else possibly confirm this? Thanks again for the help......TUNA

Posted By: mtxtech
Date Posted: May 02, 2017 at 9:22 AM

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