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Scosche GMSR11

LAN 11-bit Stereo Replacement Interface for Select 2004-12 GM Vehicles

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Scosche GMSR11

LAN 11-bit Stereo Replacement Interface for Select 2004-12 GM Vehicles


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Scosche Audio Store

This GMSR11 allows you to replace your factory OEM stereo. This interface will maintain the data-controlled +12V accessory output as well as provide navigation outputs for reverse, vehicle speed pulse and park brake.

Product Features:

  • 2004-12 GM LAN 11 Bit Stereo Replacement Interface
  • Data driven +12V Accessory (R.A.P) Output
  • Retains All Safety & Warning Chimes
  • Compatible with Standard Bose systems
  • Includes 2 harnesses:
    • 24-pin application harness
    • 14/16-pin application harness
  • Does not retain OnStar or Steering wheel functions
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Vehicle Applications

  • Chevrolet
    • Cobalt: 2005-2010
    • HHR: 2006-2011
    • Malibu: 2008-2010
    • Malibu (excluding Classic): 2004-2012
    • Malibu Maxx: 2004-2006
  • Pontiac
    • G5: 2007-2009
    • G6: 2005-2009
    • Solstice: 2006-2009
  • Saturn
    • Aura: 2007-2009
    • Sky: 2006-2009
Also found as: GMSR-11, GMSR 11, Gmsr-11, Gmsr11, Gmsr11

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.
Chevy Cobalt
Chevy HHR
Chevy Malibu
Pontiac G5
Pontiac G6
Pontiac Solstice
Saturn Aura
Saturn Sky

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
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


murfreesboro, TN

Verified Purchase

October 14, 2016

made radio hook up easy without cutting wiring in my car in case I want to
put old radio back in .

0 of 0 found this helpful

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Allyn Is Great

Dublin, OH

Verified Purchase
This interface fits my 2007 Chevy Cobalt like a glove.

March 24, 2016

This was my first time I have installed/replaced a factory stereo
in this car.

The harness fit my existing plugs like a glove. I bought a new single din head unit (my old was double din).

All I had to seperate/cut were the speakers wires because I was upgrading them.

I did have to buy an antenna adapter similar to the Scosche MDA1B / MDA1 because it was not a part of this kit. Other than that, it was smooth.

Sonic is also lightning fast at filling orders. Would definitely buy from Sonic again.

P.S. I really like the videos Sonic has on their YouTube page:

I watched a lot of videos featuring Allyn and the gang and I was able to successfully install my aftermarket head unit, amp, and subwoofer without blowing s**t up!

**P e a c e

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Browse 2 questions and 2 answers
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Why did you choose this?
Sonic Electronix Store
Needed to hook up my new radio
paul m on Sep 16, 2016
Does this wiring harness let you keep your steering wheel controls?
Donald M on Dec 21, 2015
Best Answer: Hello,

It appears that none of our customers have answered your question, so we will; The GMSR11 will NOT retain SWC. Your install will require the Axxess ASWC-1 . Give our sales team a call to potentially find an Axxess/Metra alternative to the GMSR11, that will make installation of the ASWC a bit simpler.
Reply · Report · Rick MStaff on Dec 22, 2015
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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: Scosche GMSR11