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GM Chime and Data-Bus Integration Interface


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This item has been discontinued

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rp3gm11 thumbnail

PAC RadioPro RP3-GM11

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GM Chime and Data-Bus Integration Interface


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Harness Features:

  • GM Chime and Data-Bus Integration Interface
  • Enables aftermarket radio installation without factory radio retention
  • Replicates factory warning chime
  • Provides a data-bus generated 12V accessory power output that is compatible with GM's Retained Accessory Power (RAP)
  • Issues data commands that maintain a "Healthy" system status to other vehicle systems
  • Works with Bose or Non-Bose vehicles
  • Not compatible with Premium Bose systems
  • 1-year warranty

Compatibility List:

  • Chevrolet:
    • 2000-2005 Cavalier
    • 2000-2005 Impala
    • 2000-2005 Monte Carlo
    • 2002-2003 Malibu
    • 2002-2007 Trail Blazer SLE
    • 2002-2007 Venture
    • 2002-2007 Uplander
    • 2003-2004 S-10
    • 2003-2006 Tahoe
    • 2003-2006 Suburban
    • 2003-2006 Avalanche
    • 2005-2008 Corvette
    • 2005-2008 Colorado
    • 2002-2004 Trail Blazer SLT *
    • 2003-2006 SSR *
  • Pontiac:
    • 2000-2005 Sunfire
    • 2002-2005 Grand Am
    • 2004-2007 Grand Prix
  • GMC:
    • 2002-2007 Envoy SLE
    • 2003-2006 Yukon
    • 2003-2006 Sierra
    • 2005-2008 Canyon
    • 2002-2004 Envoy SLT *
    • 2003-2006 Sierra and Yukon (Denali) *
  • Mercury:
    • 2002-2007 Rainer
  • Buick:
    • 2002-2007 Terraza
  • Oldsmobile:
    • 2003-2006 Bravada
  • Hummer:
    • 2005-2008 H3
    • 2003 H2 *
  • Cadillac:
    • 2003-2006 Escalade *

* If Premium Bose® is bypassed


  • Yellow – 12V Constant
  • Red – 12V Accessory
  • Black - Ground
  • Orange – Dash Light Dimmer/Illumination
  • Green – Left Rear Speaker (+)
  • Green with Black Stripe Left Rear Speaker (-)
  • White – Left Front Speaker (+)
  • White with Black Stripe – Left Front Speaker (-)
  • Purple – Right Rear Speaker (+)
  • Purple with Black Stripe – Right Rear Speaker (-)
  • Gray – Right Front Speaker (+)
  • Gray with Black Stripe – Right Front Speaker (-)

Product History:

PAC RP3-GM11 thumbnail
(newest, current model)
PAC C2R-GM24 thumbnail
(previous model, replaced by PAC RadioPro RP3-GM11)

Harness Features

Main Harness Function
Different installations on different vehicles require different harnesses. This type is what the harness is considered. Each wiring harness we sell serves a purpose such as installing an aftermarket car stereo, integrating an aftermarket amplifier with your factory car stereo, connecting Bluetooth to your factory car stereo, and more.
Connect/Install an Aftermarket Car Stereo
Additional Harness Features
The various features that the wiring harness provides to your car stereo and/or audio system.
Chime Retention
Retained Accessory Power (RAP) Retention
Compatible Vehicle Make
Allows you to view only items that are compatible with your vehicle's make. Does not guarantee that it will work with your vehicle year or model.
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.
Buick Terraza
Cadillac Escalade
Chevy Avalanche
Chevy Cavalier
Chevy Colorado
Chevy Corvette
Chevy Impala
Chevy Malibu
Chevy Monte Carlo
Chevy S-10
Chevy Suburban
Chevy Tahoe
Chevy Trailblazer
Chevy Uplander
Chevy Venture
GMC Canyon
GMC Envoy
GMC Sierra
GMC Yukon
Hummer H2
Hummer H3
Mercury Mariner
Oldsmobile Bravada
Pontiac Grand Am
Pontiac Grand Prix
Pontiac Sunfire

Premium Harness Features

Compatible Premium Audio Systems
Some vehicles have higher end audio systems installed in them by the manufacturer. This specifies which premium audio systems this item is compatible with.
Standard Bose
CAN-BUS Compatible
CANBUS Ballasts ensure compatibility with ALL vehicle makes and models without the need for additional accessories. In addition, they have built-in Anti-Flickering Capacitors to help prevent lighting issues caused by voltage spikes and drops by stabilizing the power.
Chime Retention
This means that the harness is able to retain the vehicles chimes.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Caribou, ME

Works great

January 5, 2015

Installed this in an 06 Sierra with Bose and on star. On star will not work with this unit but that's fine with me because I could care less about on star and it was about 60% less than one with on star support. I am using the Rca inputs. It would have been nice if the Rca cables were labeled but one quick look at the diagram on the included instructions and I was able to figure it out. I did not notice any static or feedback in the door chime but it does have a different tone and is a bit louder. All in all I would recommend this product as long as you don't care about on star.

9 of 11 found this helpful

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Centerton, AR

pac cr2-gm24

June 18, 2014

Installed on my 03 Z-71 w/Bose and factory amp (deactivate). Worked as described but the door chime from the unit sounds some what distorted. Not a big concern but is a little annoying. Other than that it works great.

7 of 9 found this helpful

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Browse 1 question and 1 answer
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i just bought the c2k gm 24 wiring harness to use to install and i have spare wires that do not match colors from my 2003 sunfire?
john w on Sep 22, 2014
Best Answer: Hello John,

This harness is NOT meant to wire into your vehicle harness, so we really hope that isn't what you are attempting to do. The colors on the harness are meant to match the colors from an Aftermarket Headunit. OEM Wiring - from any vehicle manufacture - will NEVER match the colors from aftermarket audio products. This is why Vehicle Wiring Harnesses are so important.

Technical Support:
Phone: 866-931-8021 (toll free in the U.S.)
727-572-9255 ext.230 (Customers Outside of the U.S.)
Mon-Thurs 9am-7pm EST
Friday 9am-6pm EST
Sat 9am - 7pm EST
Reply · Report · Customer SStaff on Sep 22, 2014
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Product Summary


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Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: PAC C2R-GM24