PAC RadioPro RP3-GM11

Radio Replacement Interface For Select GM Vehicles Without On-Star

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List price $119.95

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General Features:

  • Radio Replacement Interface For Select GM Vehicles Without On-Star
  • High current 10A accessory output
  • Data controlled outputs for connecting to your navigation radio; speed, reverse and E-brake status output wires
  • Retains factory installed amplifier
  • Data controlled RAP accessory output
  • Keeps vehicle data-bus intact for service
  • Plug-in-connection for steering wheel control module
    • SWI-RC
    • SWI-X
  • Adjustable chime volume
    • 4 levels
    • Off
  • Durable plastic and metal materials
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty


  • Buick:
    • 2004-2005 Century
    • 2005-2007 LaCrosse/Terraza
    • 2004-2007 Rainier
    • 2003-2007 Rendezvous
  • Cadillac:
    • 2003-2006 Escalade
  • Chevrolet:
    • 2003-2006 Avalanche
    • 2000-2005 Cavalier
    • 2004-2011 Colorado
    • 2005-2013 Corvette
    • 2004-2007 Express
    • 2000-2005 Impala
    • 2001-2003 Malibu
    • 2000-2005 Monte Carlo
    • 2003-2004 S-10
    • 2003-2007 Silverado
    • 2003-2006 SSR
    • 2003-2006 Suburban
    • 2003-2006 Tahoe
    • 2002-2009 Trailblazer
    • 2005-2008 Uplander
    • 2003-2005 Venture
  • GMC
    • 2004-2011 Canyon
    • 2002-2009 Envoy
    • 2003-2007 Savana
    • 2003-2007 Sierra
    • 2003-2006 Yukon
  • Hummer
    • 2003-2007 H2
    • 2005-2009 H3
  • Isuzu
    • 2003-2008 Ascender
  • Oldsmobile
    • 2001-2004 Alero
    • 2002-2004 Bravada
    • 2000-2004 Silhouette
  • Pontiac
    • 2001-2005 Aztec
    • 2001-2005 Grand Am
    • 2004-2008 Grand Prix
    • 2000-2006 Montana
    • 2000-2005 Sunfire
  • Saab
    • 2005-2008 9-7X
  • Saturn
    • 2007 Relay

    Product History:

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

    Harness Features

    Vehicle Sound System
    This refers to what kind of sound system the vehicle has. Premium audio systems are generally name brand systems (such as JBL, Bose, Rockford Fosgate, etc) that have been installed inside a vehicle when it leaves the factory. Often they more advanced systems, complex wiring, factory amplifiers, and other features that can make installing aftermarket component difficult.
    Standard Sound
    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 Century
    Buick Lacrosse
    Buick Rainier
    Buick Rendezvous
    Cadillac Escalade
    Chevy Avalanche
    Chevy Cavalier
    Chevy Colorado
    Chevy Corvette
    Chevy Express Van
    Chevy Impala
    Chevy Malibu
    Chevy Monte Carlo
    Chevy S-10
    Chevy Silverado
    Chevy Suburban
    Chevy Tahoe
    Chevy Trailblazer
    Chevy Uplander
    Chevy Venture
    GMC Canyon
    GMC Envoy
    GMC Savana
    GMC Sierra
    GMC Yukon
    Hummer H2
    Hummer H3
    Isuzu Ascender
    Oldsmobile Alero
    Oldsmobile Bravada
    Oldsmobile Silhouette
    Pontiac Aztek
    Pontiac Grand Am
    Pontiac Grand Prix
    Pontiac Montana
    Pontiac Sunfire
    Saab 9-7
    Saturn Relay

    Premium Harness Features

    Factory System Amplification
    This refers to the factory sound system and whether the item is compatible with amplified or non-amplified systems.
    On-Star Compatible
    This means that the harness is compatible with vehicles that have On-Star built-in.
    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.
    GM-LAN Compatible
    This means that the item is compatible with GM-LAN systems.
    Compatible with Aftermarket Navigation Systems
    This means that the item is made to work with aftermarket systems with navigation. Typically, this means that the harness has wires that are used with GPS navigation systems, such as VSS wires and others. Please read the product description for full details of this feature.
    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



    Worked well connecting my truck to a Pioneer 4000NEX

    December 25, 2014

    This product had all the features to properly connect my GMC Sierra 3500 to the Pioneer 4000NEX, including the correct polarity for the parking brake connection, connection for when the truck is in reverse, Retained Accessory Power and beeps for when the truck wants to warn you about something. It also supports enough amps for this radio [which the freebie harness Sonic will bundle with the radio for a discount doesn't].

    The only negatives I had with the product are:
    1) The power relay circuit [separate from that blue housing in the picture] had a cut on the circuit board, so no power was being provided to the radio. Fixed it myself because I didn't want to wait a month getting it replaced, but took some time to track down and bridge the break with some solder.

    2) The description for the parking brake connection wasn't that clear as to how it worked [that it was 12V most of the time, and is grounded when you press the parking brake]. It's fine that it is like this [the radio expects it to work this way], just the description on the installation sheet doesn't make it clear it works this way.

    Overall, I am very happy with this product, and how it enabled the Pioneer 4000NEX and the Pioneer ND-BC6 backup camera to work in my truck like they were installed at the factory.

    14 of 18 found this helpful

    Was this review helpful to you?


    Los Banos, CA

    Steering wheel controls

    September 13, 2016

    This is a great product. I've bought other brands and they totally did not work. Always buy the best and pac is the best.

    0 of 0 found this helpful

    Was this review helpful to you?

    Browse 4 questions and 3 answers
    Hide answersShow all answers | Sort by
    The tech at Best buy tried to make me buy the RP5-GM11 for $130,can I buy the RP3-GM11 instead? I have a 2002 Pontiac Grand AM GT that came with Monsoon radio. I don't have onstar, i dont have steering wheel with control, and I don't care about the chimes. I just want my after market radio to work. Can the RP3-GM11 work for me?
    Jason S on Mar 30, 2017
    Best Answer: Yes it will work and if u buy it came with the chime connected all ready I would say go for it
    Reply · Report · James I on Mar 30, 2017
    · Add Answer · I Have This Question Too (0)
    Installing a Pioneer AVH-X3700BH into a 2006 corvette 3LT without OnStar. Has Bose Premium 7 speaker system and AAb Memory Package. What to keep factory speaker system. Will the PAC RP3-Gm11 interface work without loosing chimes, alarms or equipment functions?
    Gary P on Dec 26, 2014
    Best Answer: Hello Gary,

    The manufacture confirms that this is the harness you seek.

    REF: 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 Dec 27, 2014
    · Add Answer · I Have This Question Too (0)
    Hi. I recently purchased the XZVI-2003-NAV interface from you to install an aftermarket Pyle receiver w/GPS and learned that the chimes and turn signals will not work with that harness. I am wondering if the PAC RadioPro RP3-GM11 is the one I should use since I want to keep the chimes and turn signals. My car is a 2007 Corvette convertible (base), no On-Star, no Bose. If not the PAC RP3, can you determine which one will work? Thanks. John Roberts
    John R on Dec 16, 2014
    Best Answer: Hello John,

    You be looking for the Scosche GM09SR instead. Although your vehicle isn't listed, it is suggested through the manufacture. I encourage you to give them a call for details: (800) 363 - 4490 ext. 3 .
    Reply · Report · Sonic Electronix SStaff on Dec 16, 2014
    · Add Answer · I Have This Question Too (0)
    Which is the wire that you hook up to the key input to my radio?
    carlitos on Jun 6, 2015
    · Add Answer · I Have This Question Too (0)

    Product Summary


    Model Number






    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 RadioPro RP3-GM11

    Item Added to Cart

    PAC RadioPro RP3-GM11

    Radio Replacement Interface For Select GM Vehicles Without On-Star


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