Scosche S3-1 GM Kit

Stereo Replacement Interface with Harness for Select 2003-Up GM LAN Vehicles

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Interface Features:

  • Stereo Replacement Interface with Built-In Steering Wheel Controls
  • Lets you keep steering wheel controls when swapping in an aftermarket car radio
  • Retains warning chimes and provides navigation outputs
  • Selectable switch for Pioneer, Alpine, Clarion, JVC, Kenwood and Sony devices
  • No programming necessary
  • Includes standard 3.5mm connection
  • Compact design for easy hiding
  • Provides a 12 volt ACC output with RAP and all navigation outputs
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Harness Features:

  • 2003-Up Select GM Class II S3-1 Connector
  • Seatbelt warning chime
  • Lights left on chime
  • RAP (Retaining Accessory Power)
  • Check engine/service indicator
  • Key left in ignition chime
  • +12V Accessory power at radios location
  • Low fuel warning
  • Low oil level warning
  • Compact design easily fits in tight quarters
  • Durable plastic and metal materials
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Compatibility List:

  • Buick
    • 2004-05 Centurey
    • 2004-06 Ranier
    • 2003-05 Rendezvous
    • 2005-UP Terazza
  • Cadillac
    • 2003-06 Escalade
  • Chevrolet
    • 2003-06 Avalanche
    • 2003 Blazer S-10
    • 2003-05 Cavalier
    • 2004-08 Colorado
    • 2003-07 Express
    • 2003-05 Impala
    • 2003 Malibu
    • 2003-05 Monte Carlo
    • 2003-06 Silverado
    • 2007 Silverado Classic
    • 2003-06 Suburban
    • 2003-06 Tahoe
    • 2003-06 Trailblazer
    • 2003-05 Venture
  • GMC
    • 2004-08 Canyon
    • 2003-06 Envoy SLT
    • 2003-07 Savana
    • 2003-04 Sanoma
    • 2003-06 Sierra
    • 2007 Sierra Classic
    • 2003-06 Yukon
  • Hummer
    • 2003-06 H2
  • Isuzu
    • 2003-06 Ascender
  • Oldsmobile
    • 2003 Alero
    • 2003-04 Bravada
    • 2003-04 Silhouette
  • Pontiac
    • 2003-05 Aztek
    • 2003-05 Grand Am

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.
Install Aftermarket Car Stereo & Retain Steering Wheel Controls
Additional Harness Features
The various features that the wiring harness provides to your car stereo and/or audio system.
Adds Auxiliary Input
Chime Retention
Provides Parking Brake & Reverse Signals
Provides Vehicle Speed Sense
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 Century
Buick Rainier
Buick Rendezvous
Buick Terraza
Cadillac Escalade
Chevy Avalanche
Chevy Blazer
Chevy Cavalier
Chevy Colorado
Chevy Express Van
Chevy Impala
Chevy Malibu
Chevy Monte Carlo
Chevy Silverado
Chevy Suburban
Chevy Tahoe
Chevy Trailblazer
Chevy Venture
GMC Canyon
GMC Envoy
GMC Savana
GMC Sierra
GMC Sonoma
GMC Yukon
Hummer H2
Isuzu Ascender
Oldsmobile Alero
Oldsmobile Bravada
Oldsmobile Silhouette
Pontiac Aztek
Pontiac Grand Am
Saturn Aura
Saturn Sky

Premium Harness Features

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.


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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

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Sonic Electronix Store
need to replace stereo for hummer h2 2006
ansel b on Aug 26, 2014

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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 S3-1 GM Kit

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Scosche S3-1 GM Kit

Stereo Replacement Interface with Harness for Select 2003-Up GM LAN Vehicles


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