Axxess LC-GMRC-LAN-03

GM LAN Data Bus Interface with Chime Retention for Select Chevrolet, Pontiac and Saturn Vehicles

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Axxess Audio Store

Product Features:

  • GM LAN Data Bus Interface with Chime Retention
  • Designed to be used in non-amplified vehicles or in vehicles that the OEM amplifier is bypassed
  • Does not retain Onstar
  • Retains all the factory warning chimes that would be lost when the OEM radio is removed
  • Provides a 10 amp 12 volt switched accessory wire for proper radio operation
  • Retains R.A.P. (Retained Accessory Power)
  • Interface components include:
    • GMRC-LAN-03 Interface
    • 10 pin to 30 pin GM harness
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Check the Product Information Sheet for more information.

Compatibility List:

  • Chevrolet:
    • 2007 - 2010 Cobalt
    • 2006 - 2010 HHR
    • 2008 - 2011 Malibu
  • Pontiac:
    • 2007 - 2008 G5
    • 2009 - 2009 G6
    • 2006 - 2008 Solstice
  • Saturn:
    • 2006-2009 Aura
    • 2006-2009 Sky


  • 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 (-)

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.
Premium 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.
Chevy HHR
Chevy Malibu
Pontiac G5
Saturn Aura

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.
GM-LAN Compatible
This means that the item is compatible with GM-LAN systems.
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


Howe, Ok

Exact match

May 5, 2014

It arrived promptly and was the exact match for my car. Was the third one I had ordered. The first two from other companies that did match what they said they would. Was great doing business with a company that sends what it is suppose to be.

23 of 28 found this helpful

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Not great

May 4, 2016

After spending 2 hours on the phone with customer service, I ended where I started. The device worked... but only with 2 out of the 4 buttons on the steering wheel. No explanation. Would not recommend.

0 of 0 found this helpful

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Browse 4 questions and 9 answers
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Why did you choose this?
Sonic Electronix Store
recommended by needed accessories
Eric D on Jun 14, 2017
It is what was recommended by Sonic Electronix, it's a module needed in order to keep my factory interior features after my new radio install.
William B on Oct 8, 2016
To connect my new Dvd stereo to my factory wiring inside my dash, that was connected to my old radio.
Rosario F on Feb 24, 2017
To retain factory door chimes
Joseph J on Jun 9, 2016
Hi I have an 2011 chevy malibu 2LT. I also have an aftermarket radio already in my vehicle. My question do i still need a wire harness for the new in dash i plan on getting?
Jet L on Apr 29, 2017
Best Answer: You should not need a new wiring harness however you will have to obviously cut the wires going to the existing radio and rewire to the new radio
Reply · Report · Aron J on Apr 30, 2017
· Add Answer · I Have This Question Too (0)
I have a 2004 DeVille. It does NOT have the Bose sys in it. I want to change the head-unit. I was told to be very careful about the harness that I buy for it. I just got done speaking with a Sonic Employee about this. He reccd a harness for one that does not have a BOSE sys in their Deville to buy: Which harness to buy for my 2004 Deville. I am going to have BestBuy install. We are taking out the factory Stereo and replacing it with an after-market head-unit. Of important note: the car is NOT Bose system. Earlier today I talked on the phone with Jacob, from Sonic - he told me if I do not have the Bose system (I do not) then I need to get wiring harness: LC GM RC 03. I was all set to throw it into my cart until I saw this on your webpage regarding this harness: "This will not fit your 2004 Cadillac DeVille All Other Models". So, what do I do? What harness do I need to buy for a 2004 DeVille that DOES NOT have the Bose Sound Sys.? Thanks.
Dean W on Jun 16, 2016
Best Answer: Hi Dean,

Do you have the Bose system? ....just kidding.

I get the feeling that Jacob mispoke or you misheard. This is because the correct harness is the Axxess LC-GMRC-03 (sans "LAN") . See the link below.

Axxess LC-GMRC-03
Reply · Report · Rick MStaff on Jun 16, 2016
· Add Answer · I Have This Question Too (0)
will this fit in my 08 Pontiac g5? I know it says 07, but mine looks the same. non amplified , and no on star.
A shopper on Apr 8, 2015
Best Answer: Hello,

Yes, this harness is compatible with that vehicle. Please go over the manufacture's specs before deciding on the unit:
Reply · Report · Rick MStaff on Apr 8, 2015
· 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: Axxess LC-GMRC-LAN-03

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Axxess LC-GMRC-LAN-03

GM LAN Data Bus Interface with Chime Retention for Select Chevrolet, Pontiac and Saturn Vehicles


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