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PAC C2R-GM11B Wiring Interface Connect a new car stereo and retain safety warning chimes in select 2004-08 Chevrolet and Pontiac vehicles w/o OnStar

Item # 1272RGM11B

PAC's C2R-GM11B radio replacement interface lets you replace the factory radio in select 2004-up Chevrolet and...

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PAC's C2R-GM11B radio replacement interface lets you replace the factory radio in select 2004-up Chevrolet and...

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13 questions - 16 answers

Item # 1272RGM11B

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$89.99

About the PAC C2R-GM11B Wiring Interface

Ken Nail

PAC C2R-GM11B

PAC's C2R-GM11B radio replacement interface lets you replace the factory radio in select 2004-up Chevrolet and Pontiac vehicles that aren't equipped with OnStar®, while retaining all factory warning chimes and audible turn signal indicators. Warranty: 1 year.

PAC C2R-GM11B

PAC's C2R-GM11B radio replacement interface lets you replace the factory radio in select 2004-up Chevrolet and Pontiac vehicles that aren't equipped with OnStar®, while retaining all factory warning chimes and audible turn signal indicators. Warranty: 1 year.

Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this model is compatible with your vehicle.

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What's in the box:

  • GMLAN warning chime and radio replacement interface
  • OEM to interface adapter harness
  • Installation instructions
MFR #C2R-GM11B

Customer reviews for PAC C2R-GM11B Wiring Interface

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More details on the PAC C2R-GM11B Wiring Interface

Stacey B.

Product Research

Features

Overview: The PAC C2R-GM11b GMLAN Warning Chime and Radio Replacement Interface allows easy connection of an aftermarket stereo in select General Motors vehicles without Onstar; please see "Outfit My Car" to confirm compatibility. This interface provides connections for the new radio's power, illumination, and speaker leads. With the C2R-GM11b, the new radio will replicate all factory chimes and audible turn signals. It also provides a data bus generated 12 volt accessory output, so the factory RAP system remains intact (Retained Accessory Power, RAP, keeps the radio powered after the key is removed from the ignition until the driver's door is opened, or ten minutes passes, whichever comes first).

Compatibility: The C2R-GM11b Radio Replacement Interface for GMLAN 11-bit vehicles without Onstar is compatible with the following GM vehicles with or without a factory amplifier:

  • Pontiac: 2005-2009 G6
  • Chevrolet: 2005-2006 Cobalt, 2004-2008 Malibu (2008 Malibu Classic only), 2004-2007 Malibu Maxx

Steering Wheel Controls: If your vehicle has steering wheel controls (and the aftermarket radio is compatible) they can be integrated using the optional PAC SWI-RC or the SWI-CP2 steering wheel control interface (sold separately).

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Customer Q&A

13 questions already asked

Q
Is this needed if i just want to replace the factory radio if im already getting the harness you make for the radio i chose?
jake  Feb 17, 2024
1 answer
A
Greetings Jake. Thank you for your question. The ready harness is a service, not an actual harness. What we do is perform the connections using the new stereos harness, and the vehicle specific harness like this. That $24.99 is the cost to have us make all the connections for you.
hogan  Feb 17, 2024 (Staff)
Q
Is this wiring harness compatible with the security lockout system?
casey  Jan 05, 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  Jan 11, 2022 (Staff)
Q
I bought this for my 08 Pontiac g6. Everything turns on but no sound. Any ideas what could be wrong?
larry  Nov 23, 2021
1 answer
A
If everything is wired correctly. Than it could be a grounded out speaker. So easy way would be to un hook one speaker at a time and see if it plays. If you get to the last speaker start hooking them but do the one that you unhooked last , hook it up last so as to rule that one out.
joseph  Nov 24, 2021
Q
I just bought a double din kenwood excelion dd395 touch screen and I'm want to install it in my 2009 pontiac g6 gt coupe will it work?
freddy  Sep 05, 2021
2 answers
A
I did a double din sony in a 2006 g6 fits ok
drew  Sep 05, 2021
A
Yes I will work I installed this in my 2005 chevy cobalt ss and it's working like a charm
luis  Sep 05, 2021
Q
I'm trying to figure out which wire is the parking brake wire because on my Android head unit I can't get the video to work at all unless I have it connected to the parking brake???
nick  Jul 06, 2021
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
kristina  Jul 06, 2021 (Staff)
Q
I have a factory amp in my 09 Pontiac G6 GT. Will the amp still work if I install this harness?
jackcadi  May 28, 2021
1 answer
A
This interface does not work with all the 2009 G6 factory audio system's that came with an amp but the ones it does work in, it can retain the stock amp so it still works to power the speakers. I recommend contacting an advisor by calling 1-800-324-9695 to check compatibility of this harness with the stock system in your G6
jason  Jun 12, 2021 (Staff)
Q
my 05 cobalt had two plugs in the back of the radio one exactly like pictured and another about that size half as wide that i do not see a pug in for. does that plug not plug into anything? now my car does not have onstar or steering wheel controls on it Thank you
mike  Jan 11, 2021
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
kristina  Jan 26, 2021 (Staff)
Q
2006 Pontiac g6 sedan. Will this keep the alerts such as oil change, tire pressure, and windshield washer fluid levels?
craig  Dec 07, 2018
2 answers
A
A year and four months later and this head unit and interface are still sitting on my work bench. In other words, I have not installed these in the car yet. Someday - maybe this winter - I will finally get it installed into my 2011 Corvette with Bose. All of that aside, why don't you ask Kenwood - or Bill Crutchfield - this question instead of me? How am I to know if it will work for your car?
richard  Dec 07, 2018
A
It doesn't have anything to do with those circuits. Thats in the body module.
raymond  Dec 07, 2018
Q
Will car info be displayed on unit ?
frederick  Mar 19, 2016
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 19, 2016 (Staff)
Q
2006 chevy cobalt my stock radio is standard not pioneer or onstar. My info don't run through radio at all it on my dash panel. what harness I need for aftermarket radio?
eric  Jan 26, 2015
1 answer
A
For 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.
kristina  Jan 27, 2015 (Staff)
Q
Will this piece show trip mileage, etc?
jeanie  Jan 16, 2015
2 answers
A
All your stock computer settings will still work.
joshua  Jan 16, 2015
A
This adapter does not interfere with the trip on the car. It us just for the auto volume level and the entirety of the speakers in the car.
jared a  Jan 16, 2015
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