Chat
Contact us
Close contact box
Connect ID #
568 529 79
Connect ID #
568 529 79

Sorry, chat is currently unavailable

Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  
Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Thank you. We will be calling you .
We're sorry. We have encountered a problem.

PAC ROEM-GM21A Wiring Interface 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...

Find what Fits your vehicle

Remove

Checking fit...

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

Item # 541GM21A

Ships free

On backorder
C$69.99

About the PAC ROEM-GM21A Wiring Interface

Bob Bihlmayer

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.

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.

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:

  • Radio replacement interface module
  • Vehicle harness
  • Radio harness
  • Instructions
MFR #ROEM-GM21A

Customer reviews for PAC ROEM-GM21A Wiring Interface

Loading reviews...

Average review:

4.5 out of 5 stars
47 reviews

Filter by rating

Customer photos

Customer provided image, click to load a larger version.
Customer provided image, click to load a larger version.

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)

Reviewed on Samsung.com

This review was collected as part of a promotion

Pros:

Cons:

Crutchfield response
Customer provided image, click to load a larger version.
<< >>

More details on the PAC ROEM-GM21A Wiring Interface

Stacey B.
The PAC ROEM-GM21A Wiring Interface replaces these items:

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.

Loading accessories...

Customer Q&A

8 questions already asked

Q
Does this harness retain onstar?PAC ROEM-GM21A Wiring Interface
john  Mar 08, 2022
1 answer
A
This will depend largely on your vehicle. For details on 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 what you will need for an installation.
kenneth  Mar 08, 2022 (Staff)
Q
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
A
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)
Q
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
A
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
A
it worked for my 2000 chevy tahoe
travis  Sep 22, 2020
Q
I'm replacing my speakers with low impedance jbl speakers. Is there a harness that lets bypass the interface module?
dean c  May 08, 2020
1 answer
A
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.
jason  May 30, 2020 (Staff)
Q
Will it still work with a six disc CD player??
teetee  Jun 16, 2018
2 answers
A
Factory CD changers will not be retained when a new stereo is installed.
ryan  Jun 20, 2018 (Staff)
A
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
Q
this for an 02 escalade ext?
daniel allen  Mar 19, 2017
1 answer
A
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.
kenneth  Mar 20, 2017 (Staff)
Q
Will this item work on a 99 gran prix with Bose system with out onstar?
maurice  Jun 06, 2016
1 answer
A
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.
kenneth  Jun 06, 2016 (Staff)
SHOW MORESHOW LESS

Loading articles...

Compare the sound