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Axxess LC-GMRC-04

Radio Replacement Interface for Select 2000-2005 GM Class II Data Bus Vehicles

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Axxess LC-GMRC-04

Radio Replacement Interface for Select 2000-2005 GM Class II Data Bus Vehicles


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Axxess Audio Store

The Metra LC-GMRC-04 is designed to be used in a non-amplified GM vehicle or in vehicles where the OEM Amplifier has been bypassed (OnStar will not be retained). This harness retains all the factory warning chimes that would be lost when the OEM radio is removed. It also provides a 10 Amp 12 volt switched accessory for proper radio operation and to retain the RAP feature if equipped.

Product Features:

  • Class 2 Data Bus Interface for select Cadillac Vehicles
  • Includes R.A.P (Retained Accessory Power)
  • Provides a 12V DC 10 amp accessory output
  • Built-in speaker retains all warning chimes
  • Used in non-amplified systems or when bypassing an amplified system
  • Does not retain Onstar
  • USB Updatable Firmware with USB-MINI-CAB or AX-OTG1AN
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Compatibility List:

  • Buick:
    • 2000-2005 Le Sabre
  • Oldsmobile:
    • 2001-2003 Aurora
  • Pontiac:
    • 2000-2005 Bonneville

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 Lesabre
Oldsmobile Aurora
Pontiac Bonneville

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

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Average Attribution Rating


Gadsden, AL

Works Great

June 25, 2015

I am putting this in a 2005 Buick Lesabre. Hookup was very straightforward. It works exactly as advertised. You don't need any other wiring harness. This has all the power and speaker hookups for an aftermarket radio.

3 of 4 found this helpful

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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-04