Scosche GM13SR

GM/ LAN Stereo Replacement Interface Module for Select 2004 - 2008 11-Bit GM Vehicles

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Scosche Audio Store

Product Features:

  • GM/ LAN Stereo replacement interface module
  • Made for select 2004 - 2008 GM vehicles
  • Stereo replacement module retains all factory safety and warning chimes
  • Includes both 24-pin connector and 16/14-pin connector set to cover all applications
  • Provides data-driven +12V accessory R.A.P output
  • For most vehicles, the GM13SR provides data-driven park brake, reverse light, AMP trigger for factory-amplified systems, vehicle speed sense (VSS) and auto illumination trigger outputs
  • Issues "Healthy" status report for OEM diagnostic scans
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty


  • 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 (-)
Note: On 2004-2007 Chevrolet Malibu/MAXX and 2005-2008 Pontiac G6 the driver information and menu adjustments are lost.

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
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 Astro
Chevy Avalanche
Chevy Aveo
Chevy Camaro
Chevy Caprice
Chevy Cavalier
Chevy Cobalt
Chevy Colorado
Chevy Corsica
Chevy Corvette
Chevy Epica
Chevy Impala
Chevy Lumina
Chevy Malibu
Chevy S-10
Chevy Silverado
Chevy Tahoe
Chevy Uplander
Chevy Venture
GMC Acadia
GMC Canyon
GMC Envoy
GMC Full Size Truck
GMC Jimmy
GMC S-15
GMC Safari
GMC Savana
GMC Sierra
GMC Sonoma
GMC Yukon
Pontiac Aztek
Pontiac Bonneville
Pontiac Early Models
Pontiac Firebird
Pontiac G5
Pontiac G6
Pontiac Grand Am
Pontiac Grand Prix
Pontiac Montana
Pontiac Sunfire
Pontiac Torrent
Pontiac Vibe

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


Charlotte, NC

Kit needed to install car stereo

June 3, 2011

Needed to install JVC KD-HDR60 into Chevy Cobalt sedan. The instructions for self-install were fairly clear and installed easy enough. Still no problems after 6 months!

20 of 23 found this helpful

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Speaker sounds cheap

May 11, 2014

Comes with two harnesses with RCA connectors. The speaker rattles sometimes.

20 of 24 found this helpful

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Hinesville, GA

Not worth it even for free

April 4, 2014

Not a good adapter if running a deck with iPod capabilities. Burned out in two weeks of light use. I'll keep my deck hard wired.

20 of 24 found this helpful

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Trevor, WI

Works Great

June 17, 2009

It matched right up with my Cobalt's harness and the color coding match my aftermarket head units, so everything was good. The speaker for turn signal and open door is rather cheap and because my car has one built in, i was able to just cut the speaker out and everything was good.

17 of 21 found this helpful

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Saint Louis, MO

Only for Cobalts/G5's

November 17, 2009

This is the only easy to use and working GM converter to retain door chimes. I love it works flawlessly and allows volume control of door chimes.

15 of 19 found this helpful

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West Memphis, AR

gets the job done

March 24, 2014

this product covers a wide range of vehicles and it is a quality product but the internal speaker blows fast and then sound like a crying baby when it makes its sounds does get anoying but this product worked and is still in use would bye again

14 of 18 found this helpful

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Browse 7 questions and 16 answers
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Why did you choose this?
Sonic Electronix Store
Needed this to interface an aftermarket Pioneer deck to the car door chimes. Worked great!
puresound on Nov 5, 2016
Scosche is always a good choice when it comes to aftermarket radio unit installations
Darren H on Dec 8, 2014
Required to adapt to vehicle. However, this is a forced purchase if you want to upgrade your stereo.
Ron B on Oct 10, 2015
best price you can find anywhere!
matthew m on Dec 1, 2014
Do I have to use this on my 05 malibu or will the Metra 70-2103 work? My car does not have onstar or steering wheel controls, nothing fancy like that.
Austin f on Feb 1, 2015
Scosche GM13SR
Scosche GM13SR
Metra 70-2103
Metra 70-2103
Best Answer: The interface will do two things for you: it will retain your warning chimes and it will provide the proper input for the "Ignition" wire on the aftermarket radio. You can use the 70-2103 but you will have to find your own "ignition" source and you will have no one else to blame if you leave your headlights on and kill your battery.
Reply · Report · nc-stereoman on Feb 28, 2015
· Add Answer · I Have This Question Too (2)
i ordered this a while ago for my 2007 chevy impala and it does not work has anyone else had this issue? i cant get power to the head unit
Isaiah P on Jun 13, 2015
Best Answer: I used this on my 2003 impala and it worked fine. Try checking all the wire connections maybe one came lose or was hooked up to the wrong wire. If that's all fine try putting a current tester on it to see if power is reaching the head unit.
Reply · Report · William C on Jun 13, 2015
· Add Answer · I Have This Question Too (0)
can I use this on my 2011 Malibu I have no on star or no volume control on my steering wheel?
kellz23zone on Jul 26, 2015
Best Answer: Hello,

Scosche is recommending the GMSR11:

Technical Support: (800) 363 - 4490 ext. 3
Reply · Report · Rick MStaff on Jul 26, 2015
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I need the correct interface for an aftermarket stereo for a 2007 Silverado classic 2500 HD ?
Kerry D on Jul 15, 2015
Best Answer: Hello Kerry,

That vehicle has Many trim levels; we suggest contacting our sales team to accurately pinpoint the one needed for it. It can be anything from the to the or higher, depending on the OEM features. or call our Sales Team at 1-877-289-7664 opt 1 .
Reply · Report · Rick MStaff on Jul 15, 2015
· Add Answer · I Have This Question Too (0)
will this work seeing my 08 g5 came with a stock sum and amp already or will this still keep my head unit from turning on?
jordan o on Oct 29, 2014
Best Answer: Hello Jordan,

The Scosche GM13SR is meant to Retain the OEM amp, and is meant to also Turn ON your headunit.

REF: Technical Support: (800) 363 - 4490 ext. 3
Reply (1) · Report · Customer SStaff on Oct 29, 2014
· Add Answer · I Have This Question Too (0)
where is the amp trigger? I am installing into a 2007 chevy hhr with factory amp
janet00 on Aug 14, 2014
Best Answer: Blue/White wire on the harness GM13SR
Reply · Report · Joseph C on Aug 14, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


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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: Scosche GM13SR

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Scosche GM13SR

GM/ LAN Stereo Replacement Interface Module for Select 2004 - 2008 11-Bit GM Vehicles


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