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Metra Axxess GMOS-01 02-Up Onstar Harness Adapter with Chime, 9.30in. x 4.20in. x 2.50in.

4.2 4.2 out of 5 stars 553 ratings

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Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt. You may receive a partial or no refund on used, damaged or materially different returns.
Adapter
Standard Packaging

Purchase options and add-ons

Brand Metra
Material Polyvinyl Chloride (PVC)
Item Dimensions LxWxH 5.5 x 7.5 x 1.8 inches
Item Weight 0.02 Pounds
Cable Type USB

About this item

  • Compatible with non-amplified GM vehicles
  • Retains OnStar with adjustable volume output
  • Retains chime with adjustable volume output,Provides accessory power (12-volt 10-amp)
  • Retains RAP feature.Pre-wired ASWC-1 harness (ASWC-1 sold separately)
  • USB update interface compatible
  • *If the vehicle is amplified, either use the GMOS-04 interface, or bypass the amplifier. If bypassing the amplifier, follow the Axxess Interface Amp Bypass Schematic in the documents section
See more product details

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$52.99
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$6.39
Get it as soon as Wednesday, Mar 27
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$12.02
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This Item
Metra Axxess GMOS-01 02-Up Onstar Harness Adapter with Chime, 9.30in. x 4.20in. x 2.50in.
Metra Axxess GMOS-01 02-Up Onstar Harness Adapter with Chime, 9.30in. x 4.20in. x 2.50in.
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Price-12% $52.99
Typical:$59.99
$114.95$59.95$20.90$42.99$54.99
Delivery
Get it as soon as Wednesday, Mar 27
Get it as soon as Wednesday, Mar 27
Get it Mar 28 - Apr 1
Customer Ratings
Value for money
3.6
4.3
4.5
Easy to install
3.5
4.5
4.8
Tech Support
2.9
4.1
5.0
Sold By
JEC Tech
CarXtc
CarXtc
LUXAUTO-US
Amazon.com
SonicElectronix-com
connector type
Usb
Barrel Connector
Usb
material
Polyvinyl Chloride (PVC)
Acrylonitrile Butadiene Styrene
Acrylonitrile Butadiene Styrene
Polyvinyl Chloride (PVC)
WIRE
weight
0.02 pounds
0.04 kilograms
0.02 pounds
0.08 pounds

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Metra

Metra Axxess GMOS-01 02-Up Onstar Harness Adapter with Chime, 9.30in. x 4.20in. x 2.50in.


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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 5.5 x 7.5 x 1.8 inches; 0.32 ounces
  • Item model number ‏ : ‎ GMOS-01
  • Date First Available ‏ : ‎ October 31, 2006
  • Manufacturer ‏ : ‎ Metra Electronics Corp
  • ASIN ‏ : ‎ B000K52DVY
  • Customer Reviews:
    4.2 4.2 out of 5 stars 553 ratings

Product guides and documents

What's in the box

  • Axxess Gm Data Interface 2000-2013
  • Product Description

    Axxess Combines an Interface and DSP for Digital, Analog or Non-Amplified Vehicles! From fixed level output for digital systems to analog factory systems, or even adding a subwoofer to an OE system, the versatile AX-DSP has installers covered.


    From the manufacturer

    About Us

    We at Metra always strive to listen to our customers. You have told us to do a better job at telling the Metra story. For over 70 years, Metra has maintained its cutting edge by paying attention to our marketplace and innovating products to fit the needs of the installer. We are the "Installer's Choice" because we are installers. Metra - offering the best in dash kits and aftermarket car audio installation accessories.

    Looking for specific info?

    Customer reviews

    4.2 out of 5 stars
    4.2 out of 5
    553 global ratings

    Customers say

    Customers have negative opinions about the wiring on the harness. They say that some of the wiring doesn't make sense, and may get confusing if you're an amateur. They also mention that the harness didn't include all the wires. Customers are mixed on volume, value, ease of installation, and performance.

    AI-generated from the text of customer reviews

    108 customers mention68 positive40 negative

    Customers are mixed about the performance of the cable assembly. Some mention that it works well, the On-Star system definitely works, and the radios power well. However, others say that it doesn't work 100%, does not work if you have Bose or an amplified system, and does not come on at all.

    "Worked great for my vehicle. I only gave it 3 stars because the instructions are HORRIBLE!..." Read more

    "It's a little off point because it doesn't work one hundred percent but I want to say 95% of the features that it recommends that it has that it..." Read more

    "...All my steering controls work perfectly, all door chimes and On Star are audible...." Read more

    "Works well as an interface with my car. Important note: This unit does NOT include the ASMC-1 module required to use the steering wheel...." Read more

    52 customers mention26 positive26 negative

    Customers have mixed opinions about the ease of installation of the cable assembly. Some mention that the installation instructions are easy to understand, and the wiring was very easy. However, others say that the instructions are horrible, confusing, and difficult to follow.

    "...rather vague portion of the instructions otherwise they where very easy to follow...." Read more

    "...I only gave it 3 stars because the instructions are HORRIBLE!..." Read more

    "...So, I saved some time and energy wiring things up.Wiring was very easy and involved snipping some unused wires..." Read more

    "...The only complaint is the instructions are not that good - they should be more clear and include more diagrams...." Read more

    27 customers mention13 positive14 negative

    Customers are mixed about the volume of the cable assembly. Some mention that the controls work perfectly, all door chimes and On Star are audible, and the chime is actually quieter than the factory one. They appreciate that the volume can be lowered. However, others say that the chime sounds awful, different than OEM, and really loud.

    "...I was also able to adjust the volume of the chimes/ On Star with no problems therefore no question as to proper installation exists...." Read more

    "...These sounds out of this unit are just three very loud and fast bursts of tone which will take some getting used to...." Read more

    "...All my steering controls work perfectly, all door chimes and On Star are audible...." Read more

    "...Door chime tone/quality complaints - Really? Really? It's a chime, you can adjust the volume, and did I mention it's *just* a chime?..." Read more

    16 customers mention7 positive9 negative

    Customers have mixed opinions about the value of the cable assembly. Some find it very good for the price, while others say it's not worth the money.

    "...This is pretty pricey though; I was expecting to put a radio in my car for <$200; and this set cost almost as much as the new radio I bought. Ooof." Read more

    "...stereo installation market, it is also in my opinion the best choice for the money...." Read more

    "...if you want to retain the RAP system in your GM, although it's a little expensive!" Read more

    "...The item was nice, packed well, and instructions were very complete...." Read more

    11 customers mention0 positive11 negative

    Customers are not happy with the wiring of the cable assembly. They mention that some of the wiring on the harness doesn't make sense, it may get confusing if you're an amateur, and there are a lot of extra wires. Customers also say that the manual is exact and clear.

    "...Also, there will be A LOT of extra wires. Since this is generic for a lot of different manufacturers and models not all wires will be used...." Read more

    "...I then proceeded to test the GMOS. It had 12v constant but lacked 12v at the accessory wire which initializes the head unit...." Read more

    "...The wiring may get confusing if you're an amateur, but if you read the directions slowly, carefully, and more than once, I'm sure you'll get it!" Read more

    "...sold an older model without USB update port and therefore the wiring did not match up...." Read more

    Installed in minutes and worked the 1st time
    5 Stars
    Installed in minutes and worked the 1st time
    Very easy install. Especially if you've already installed a car stereo. Wired it up and plugged it in and it worked perfectly. And its a 3rd of what the competitors charge.
    Thank you for your feedback
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    Top reviews from the United States

    Reviewed in the United States on July 10, 2023
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    Reviewed in the United States on March 31, 2013
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    Top reviews from other countries

    Cj
    5.0 out of 5 stars 5/5 Excellent Unit: Product Manual Listed Here For Vehicle Info.
    Reviewed in Canada on March 23, 2017
    Style: AdapterProduct Packaging: Standard PackagingVerified Purchase
    8 people found this helpful
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    Cody
    5.0 out of 5 stars for pontaic grand prix gt
    Reviewed in Canada on December 17, 2015
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    Jeff fuchs
    1.0 out of 5 stars Not as described
    Reviewed in Canada on May 29, 2023
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    Jeff fuchs
    1.0 out of 5 stars Not as described
    Reviewed in Canada on May 29, 2023
    Product not new. all packaging opened. contents inside unused surprising enough. no instructions inside packaging. I don’t recommend
    Images in this review
    Customer image
    Customer image
    SAM
    3.0 out of 5 stars Slightly Defective But it Worked...Eventually.
    Reviewed in Canada on May 9, 2014
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    CamFSJ
    5.0 out of 5 stars But works just great, I have nouthing bad to say about this
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