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Metra 70-2003t

Class 2 Relocation Harness for Select 2000-2006 GM Vehicles

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List price $39.99

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Product Features:

  • Harness Relocates Factory Radio for Retention of Class 2 Data Features
  • The SP-2003 is needed to retain warning chimes
  • 24 Pin plugs into car harness
  • Power/4 Speaker
  • Will retain the factory radio for data functions
  • Allows for the installation of an aftermarket radio using the existing wiring and connectors
  • No cutting of factory wiring needed
  • 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 (-)

Compatibility List:

  • Buick:
    • 2002 Rendezvous
  • Chevrolet:
    • 2000 - 2002 Cavalier Coupe
    • 2000 Cavalier Convertible
    • 2000 - 2002 Impala
    • 2001 - 2002 Malibu
    • 2000 - 2002 Monte Carlo
    • 2000 - 2002 Venture
  • Pontiac:
    • 2001 - 2002 Aztec
    • 2001 - 2002 Grand AM
    • 2000 - 2002 Montana Minivan
    • 2000 - 2002 Sunfire

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 Factory OEM Radio Without Disconnecting Aftermarket Radio
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 Rendezvous
Chevy Cavalier
Chevy Impala
Chevy Malibu
Chevy Monte Carlo
Chevy Venture
Pontiac Aztek
Pontiac Grand Am
Pontiac Montana
Pontiac Sunfire

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

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Your Price $39.99

Browse 2 questions and 2 answers
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Why did you choose this?
Sonic Electronix Store
Needed it to keep the factory radio controls of 2003 Impala
Trammell M on Jan 16, 2015
I chose this harness to retain all the functions of the factory stereo by relocating it! Peace of mind!
Robbie T on Aug 14, 2014
what are the gray and red stripe wire and the second yellow and second black for?
stephen d on Aug 16, 2016
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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: Metra 70-2003t