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Metra 70-2003

Wiring Harness for Select 1998-2009 GM Vehicles

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List price $19.99

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$5.97

with warranty

Order within 14 hrs 57 mins to ship 12/9

Arrives by Friday, Dec. 16 to zip 94107

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Metra Audio Store

Product Features:

  • Plugs into car harness for Select 1998-up GMC Vehicles
  • 24-Pin plug
  • High quality factory plug GXL Wire provides flexibility and handles more power
  • High impact ABS OEM Quality plastic molded connectors
  • OEM Quality terminals
  • Allows for the installation of an aftermarket radio using the existing factory wiring and connectors
  • No cutting of factory wiring needed
  • Note: Not for use with Bose or Monsoon sound system except the Hyundai Santa Fe
  • Check the Product Instructions to see basic instructions and compatibility list for the Metra 70-2003
  • Authorized Internet Dealer
  • 1 Year Manufacturer's Warranty

Installation Note: The included Red wire will need to be run to the fuse box to supply accessory power to the aftermarket radio. A brass fuse tap is provided to assist you in tapping into the fuse box.

Compatibility List:

  • Chevrolet:
    • 2003 - 2005 Blazer
    • 2002 Blazer (with Double-DIN radio)
    • 2001 - 2002 Express Van
    • 2000 - 2001 Metro
    • 2000 - 2003 Prizm
    • 2003 - 2004 S-10 Pickup
    • 2002 S-10 Pickup (with Double-DIN radio)
    • 1998 - 2004 Tracker
  • GMC:
    • 2001 - 2002 Savana Full Size Van
    • 2003 - 2004 Sonoma
    • 2002 - 2003 Sonoma (with Double-DIN Radio)
  • Hyundai:
    • 2009 Santa Fe (with OE Nav)
    • 2008 Santa Fe (with Nav)
    • 2003 - 2006 Santa Fe (with Monsoon)
  • Kia:
    • 2003 - 2006 Sorento EX
    • 2003 - 2006 Sorento LX with Sport Package
  • Pontiac:
    • 2003 - 2008 Vibe
  • Suzuki:
    • 1999 - 2004 Vitara
  • Toyota:
    • 2003 - 2004 Matrix

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
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.
Chevrolet
GMC
Hyundai
Kia
Pontiac
Suzuki
Toyota
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 Blazer
Chevy Express Van
Chevy Metro
Chevy S-10
Chevy Tracker
GMC Savana Van
GMC Sonoma
Hyundai Santa Fe
Kia Sorento
Pontiac Vibe
Suzuki Vitara
Toyota Matrix

Warranty and Return Policy

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

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
77%
4 Star
12%
3 Star
12%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.7
Value
4.7
Features
4.6
Design
4.6
Usability
4.7
Robert

Canada

Overall
Durability
Value
Features
Design
Usability
Doesn't work on 2007 Pontiac G5

June 16, 2014

Bought this as a cheap alternative to change my in car stereo on my 2007 Pontiac G5. This adapter clearly doesn't fit. Not worth it to ship it back as I'd break even.

80 of 93 found this helpful

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rob

Wichita, KS

Overall
Durability
Value
Features
Design
Usability
works like a champ

February 14, 2014

If ya don't really care about the ding ding from your car this is a cheap way to get an aftermarket radio in your ride.

73 of 87 found this helpful

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JASON

GREENWOOD, IN

Overall
Durability
Value
Features
Design
Usability
Metra harnesses #1 again

February 24, 2013

I love using the Metra harnesses. Metra is the top of their game.

69 of 81 found this helpful

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thenextdon

Oregon

Overall
Durability
Value
Features
Design
Usability
Worked perfectly

November 17, 2014

Perfect fit for girlfriend's 2008 vibe. Wiring was all correct and plug fit properly.

67 of 79 found this helpful

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Joseph

tulsa, OK

Overall
Durability
Value
Features
Design
Usability
great harness

March 14, 2014

this harness worked great. just plug and play. good job Sonic

68 of 81 found this helpful

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Carlos

Montgomery, IL

Overall
Durability
Value
Features
Design
Usability
Nice

July 11, 2011

Works great with my grand prix makes installation way easier no need to cut wires

66 of 80 found this helpful

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jvj

Sullivan, IL

Overall
Durability
Value
Features
Design
Usability
Easy for all

September 20, 2010

every wire matched up to the wires from my stereo so it was just splicing and plugging the stereo wiring harness into the vehicle wiring harness and that was it!

64 of 77 found this helpful

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illy

Champaign, IL

Overall
Durability
Value
Features
Design
Usability
Super Buy

March 10, 2013

This product arrived on time and is easy to install. Very impressed. Fit right into my car with no problem. I would recommend this product

62 of 74 found this helpful

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Damon

Des Moines, IA

Overall
Durability
Value
Features
Design
Usability
Works perfect as it should!

July 9, 2012

I have an 2004 Colorado, I did have a a fancy chime retention/computer harness and kept having lots of weird electrical issues. I replaced the unit w/ this unit and have had no more issues. Should have went this route in the first place.

64 of 79 found this helpful

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dennis

houston, tx

Overall
Durability
Value
Features
Design
Usability
excellent

March 21, 2011

Worked as advertized. Was the correct adapter.

61 of 74 found this helpful

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Brian

Bellingham, MA

Overall
Durability
Value
Features
Design
Usability
Great

November 28, 2011

It works great. I am very pleased with the product.

60 of 73 found this helpful

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Shawn

Arlington, TX

Overall
Durability
Value
Features
Design
Usability
good

January 2, 2013

Great simple harness. The fact that it was free with radio purchase is great too.

59 of 72 found this helpful

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Darryl

Redwood City, CA

Overall
Durability
Value
Features
Design
Usability
easy

December 16, 2012

Worked like a charm. Wires all matched up as they should

59 of 73 found this helpful

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stan

saint peters, mo.

Overall
Durability
Value
Features
Design
Usability
works great

March 11, 2012

Easy to install, great tech at Sonic turning me on to this part.

57 of 69 found this helpful

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kyle

houston, texas

Overall
Durability
Value
Features
Design
Usability
did alright.

January 12, 2013

I put this in an 03 silverado but when I installed it everything matched except the power wrote so I had to wow it into a fuse.

56 of 68 found this helpful

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Dave

Lake Mills, IA

Overall
Durability
Value
Features
Design
Usability
Wrong Harness

January 18, 2011

Needed a harness for a 2004 LeSabre. Wrong one. Needed Scosche GM07B since it has the GM Dock and Lock system.
Be sure to check to see if u have the Dock and Lock in your car before ordering.

57 of 70 found this helpful

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Ben

Canada

Overall
Durability
Value
Features
Design
Usability
Very easy to use

July 10, 2013

I found this extremely easy to use and it was very helpful for simplifying my installation into a 2003 Toyota Matrix

56 of 69 found this helpful

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Ralph

Boston, MA

Overall
Durability
Value
Features
Design
Usability
Metra 70-2003

January 19, 2012

Quick shipping. Product easy to use and install and works perfectly.

53 of 65 found this helpful

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Larry

Markleton Pa

Overall
Durability
Value
Features
Design
Usability
Needed a part

July 19, 2013

I needed a new wire harness to replace a bad wire job on my daughters car. this did a great job for us.

49 of 61 found this helpful

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Matthew

Safford AZ, AZ

Overall
Durability
Value
Features
Design
Usability
Perfect fit

June 10, 2015

Ordered this for my 04 Silverado wasn't sure it would work because all the forums stated I would need a $100 adapter, thought I would try it for 5$ and it worked great I did lose my chimes but having a aftermarket deck in my Chevy is far more important to me than a worthless seat belt chime

26 of 32 found this helpful

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andrew

tampa, FL

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
great brand - great price on my wiring harness

July 28, 2015

same 1st quality name brand installation gear
as crutchfield at much much lower price & way lower shipping rates
& Sonic Electronix customer support is 2nd to none!
Thanks Sonic E!!! you're the best
You've now got a loyal /dedicated customer for Life
I'm very very happy with Sonic E no reason to shop or price anyone
else, you always get the best deal here

Great instructions for the DIYer with my metra harness

19 of 23 found this helpful

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David

Pryor, OK

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Still have

December 24, 2015

Didn't use this, already have one installed, will keep for future use

4 of 5 found this helpful

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Carl

Weatherly, PA

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Metra 70-2003

November 26, 2016

Good product. Fit good. Works as it should. I would recommend this product to a friend.

0 of 0 found this helpful

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Bob

ANNISTON, AL

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Great Connection

November 21, 2016

Used this to install my friends aftermarket stereo in his silverado truck and it worked great. Metra products are great!

0 of 0 found this helpful

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Hoztradamos

Whites Creek, Tn

Overall
Durability
Value
Features
Design
Usability
Metra harness

October 10, 2016

I spent time searching for this adapter & am glad I did. I bought an aftermarket radio that needed a specific part & this is it. Do your research & metra is a recognized brand.

0 of 0 found this helpful

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Benjamin

Amarillo, TX

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Saves you $ if your truck isn't Bose or if you don't care about onstar.

March 27, 2016

I've been professionally installing for almost 20 years and Metra makes the best parts on the market.

0 of 0 found this helpful

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Browse 6 questions and 24 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
easy install
Tim B on Dec 8, 2016
it is a just in case I need it.
travis t on Nov 27, 2016
I chose it because my friend told me you guys are the Best!!
Roberto D on Dec 5, 2016
It is direct fit for my truck
Daniel C on Nov 26, 2016
will this work on 2004 pontiac grandam, and what is the single red wire for?
A shopper on Dec 31, 2014
Best Answer: It might work for the 04 Pontiac since this is a GM harness, but it's for select GM vehicles so I don't know. I bought this for a 2003 Chevy Tracker. I took the old radio out & took a picture of the harness connector to make sure they way it was keyed would match this Metra harness & it did. The red wire on the harness is either the 12v power or Ignition (can't remember, they are labeled though). The long extra red wire is for certain vehicles that need to have the ignition wired in differently. I did not use this wire. This harness comes with a small list of cars that may need that red wire. I just connected my harness as is.. no extra red wire. I did have to move a couple of wires over in the harness to match up with the ones in my car.
Reply · Report · Michael R on Dec 31, 2014
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will this harness work on a 2005 pontiac grand am?
A shopper on Oct 2, 2014
Best Answer: Yes is a GM car make sure to read color code in the bag of Metra wire harness go online and check for wiring color code of your car by model and year write everything down on paper, also make sure part number of Metra harness is compatible with your car " it does not hurt double check" I do all the time, good luck sir :D

Regards
Juan
Reply · Report · Juan V on Oct 3, 2014
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Metra 70-2003. The description does not mention the blue/white wire and orange/white wire. The picture clearly shows both of these. What do they go to?
Mary W on Aug 17, 2014
Best Answer: The blue and white wire is for your remote hook up to your amps all though i bypassed the remote wire and installed switches

The orange and white wire was suppose to be for the dimmer feature if your radio has one mine didnt work

The extra red wire shown is for the radio's igintion on wire being as chevy dosent use a hot wire and a ignition wire in their factory harness so u have to find a wire that has power when you turn the key to the acc. Position. Or do like i did and put the radio on a switch as well.
Reply · Report · Richard v H on Aug 18, 2014
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What is the royal blue colored wire used for?
Ronnie H on Jun 18, 2016
Best Answer: Hi,

That is for a 'antenna/remote'. If you stereo does not have a matching wire, it does not need this.
Reply · Report · Rick MStaff on Jun 18, 2016
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my stock radio has 2 plugs for the factory radio,will this work for that.the new radio does have two plus in the back ,pontiac grand prix 2006?
robert on May 9, 2015
Best Answer: this will work but your radio will stay on when you take the key out because of the constant hot
Reply · Report · antoine p on May 10, 2015
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Product Summary

Manufacturer

Model Number

70-2003

UPC

086429075799

Weight

0.17lbs

Internal SKU

met-702003

Internal Product ID

12452

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 70-2003