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Scosche GM13SR

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

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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.


Second Depth
The second depth is used only when the box is slanted or angled. This value is the top measurement and it is measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
Color of handle.

Warranty and Return Policy

Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

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Average Attribution Rating

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
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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
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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
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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
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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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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