PAC ROEM-GM21A Wiring Interface

Name: PAC ROEM-GM21A Wiring Interface
Brand: PAC
SKU: 541GM21A
Price: 49.99 USD
Availability: InStock
Rating: 4.5 (32 reviews)

Connect a new radio and retain the Bose® system in select 1999-02 GM vehicles

Item # 541GM21A

You want to replace the radio in your GM vehicle, but you don't want to go through the hassle of replacing your...

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PAC ROEM-GM21A Wiring Interface - Front

You want to replace the radio in your GM vehicle, but you don't want to go through the hassle of replacing your...

7 questions - 8 answers

Item # 541GM21A

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OVERVIEW

by Crutchfield's

Keep your Bose® system

You want to replace the radio in your GM vehicle, but you don't want to go through the hassle of replacing your vehicle's Bose® amplifier. PAC's ROEM-GM21A system interface bridges the gap between the Bose® system and your new receiver, allowing you to keep your Bose® system while upgrading your radio. Warranty: 1 year.

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Keep your Bose® system

Note: If you haven't already, please enter your vehicle information or call a Sales Advisor at 1-888-955-6000 to find out if this adapter is compatible with your vehicle.

READ LESS

What's in the box:

PAC ROEM-GM21A Wiring Interface owner's manual

Radio replacement interface module
Vehicle harness
Radio harness
Instructions

MFR #ROEM-GM21A

Featured review

The interface is easy to install one side you use the wiring harness from you vehicle and the other goes from the box to the your stereo. All wires should be used because it comes with high and low.

Kathryn from Kentucky

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Customer Q&A

Will this work for a 2005 Chevrolet Tahoe? Its for my own personal vehicle. Looking to replace just the headunit. No speakers amp etc

it worked for my 2000 chevy tahoe

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REVIEWS

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PAC ROEM-GM21A Wiring Interface reviews

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32 reviews

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DETAILS

Researched by Crutchfield's Stacey B.

The PAC ROEM-GM21A Wiring Interface replaces these items:

PAC OS-1 Wiring Interface

Product Research

Features

Radio Replacement Interface: The PAC ROEM-GM21A facilitates the replacement of the factory-installed Delco/Bose radio in select GM vehicles with an aftermarket stereo, while retaining the function of the factory amplified audio system.

Vehicle Compatibility: The PAC ROEM-GM21A is compatible with the following GM vehicles featuring the factory installed Bose audio system.

Make	Model	Year
Cadillac	Escalade	1999-2002
Chevy	Blazer (S-10)	1999-2001
	Suburban	1998-2002
	Tahoe	1998-2002
GMC
	Jimmy	1998-2001
	Yukon	1998-2002

Adjustable Gain: This 4-channel radio replacement interface will allow your new aftermarket stereo's output to be adjusted to the input requirements of the existing factory installed amplifier, providing 2:1 gain and infinite attenuation.

The PAC ROEM-GM21A Wiring Interface replaces these items

PAC OS-1 Wiring Interface

Connect a new car stereo and retain OnStar® and the Bose® audio system for select GM vehicles

8 reviews

Lets you replace any General Motors radio (without RDS) while maintaining operation of the OnStar® system and GM/Bose ® audio system

ACCESSORIES

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Q&A

7 questions already asked

The rear speakers in my 02 Cadillac Escalade Ext stopped working. Will this allow me to bypass the failed BOSE amp to get the rear speakers working?

[ James Oct 27, 2020 ]

1 answer

The PAC ROEM-GM21A Wiring Interface is actually a wiring harness used to retain the Bose amplifier when replacing the factory radio with an aftermarket radio. Give us a call at 1-800-324-9695 to discuss other options.

[ Allison Nov 25, 2020 ] Staff

Will this work for a 2005 Chevrolet Tahoe? Its for my own personal vehicle. Looking to replace just the headunit. No speakers amp etc

[ Zero cool Sep 22, 2020 ]

2 answers

I have a 2002 Tahoe. I bought this piece and my battery kept dying extremely fast. If I had the door open for like ten minutes i would have to boost it off. I ended up removing this. I hooked the pink wire in my truck to the power wire on the radio and it worked fine. No more battery issues.

[ alvin Sep 22, 2020 ]

it worked for my 2000 chevy tahoe

[ Travis Sep 22, 2020 ]

I'm replacing my speakers with low impedance jbl speakers. Is there a harness that lets bypass the interface module?

[ Dean May 08, 2020 ]

1 answer

Sometimes we do have amp bypass harnesses that are used instead of using interfaces like this one. I recommend contacting an advisor on 1-800-324-9695 to check your vehicle.

[ Paul May 30, 2020 ] Staff

Will this wire harness work with other units that arent listed on the dial you turn for specific makes of head units?

[ Kirk Mar 28, 2020 ]

Will it still work with a six disc CD player??

[ TeeTee Jun 16, 2018 ]

2 answers

Factory CD changers will not be retained when a new stereo is installed.

[ Ryan Jun 20, 2018 ] Staff

if you mean the cd that come originally it will bypass the unit cause you are using the aftermarket radio with this adapter

[ Juan Jun 16, 2018 ]

this for an 02 escalade ext?

[ dan Mar 19, 2017 ]

1 answer

For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will integrate and what you will need for an installation in your vehicle.

[ Kenny Mar 20, 2017 ] Staff

Will this item work on a 99 gran prix with Bose system with out onstar?

[ Maurice Jun 06, 2016 ]

1 answer

For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.

[ Kenny Jun 06, 2016 ] Staff

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