Metra 40-GM10 Antenna Adapter

Works with select 1985-up General Motors vehicles — Motorola male to female connector for factory antenna

Item #: 12040GM10

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587 Reviews | 1 question - 1 answer

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Metra 40-GM10 adapter

The Metra 40-GM10 adapter lets you connect an aftermarket receiver to the factory antenna cable. It has a male Motorola plug on one end and a female GM OEM jack on the other. If you're installing an FM modulator with your factory radio, you'll also need item 12040GM20. Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this adapter is compatible with your vehicle. Warranty: 60 days.

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so, then check here for a list of parts. You can also call an Advisor for more information.

Hands-on research

What's in the box?

Download owner's manual

  • GM antenna adapter cable

Product Research

Features

Compatibility: The Metra AntennaWorks GM antenna adapter cable (40-GM10) converts the mini "barbed" or "barbless" plug of the factory antenna to a standard motorola connection for installation of an aftermarket car stereo head unit in select 1985 and later GM vehicles.

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At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Metra 40-GM10 Antenna Adapter Reviews

Average Customer Review:

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Must buy

Written By Justin, Roanoke, va on Thursday, January 22, 2015

Crutchfield Customer Review (What's this?)

This adapter makes installation so much easier and when you buy a head unit from Crutchfield you get it free that's why I always buy Crutchfield you get everything you need

Pros: Easy installation

Cons: A little too long still worked

Easy

Written By Lee, Flowood ms on Wednesday, January 21, 2015

Crutchfield Customer Review (What's this?)

Plug and Plug doesn't get any easier

Pros: Good length to allow movement during install

Cons: None

Easy, Works

Written By Jason T, Georgia on Tuesday, January 20, 2015

Crutchfield Customer Review (What's this?)

It fits on both ends, and seems to tune nicely. Couldn't ask for anything more.

Ground Control to Major Tom

Written By GrantG, Tennessee on Sunday, January 18, 2015

Crutchfield Customer Review (What's this?)

Totally easy to plug between the new radio and old connector.

Pros: I have the magic of radio in my truck.

Cons: A lot of the magic of radio includes Florida-Georgia Line around Nashville way.

Sounds GREAT

Written By TD, New York on Sunday, January 18, 2015

Crutchfield Customer Review (What's this?)

Quick Easy Install. Picked up RECEPTION quite Well. Actually had my initial antenna on my vehicle stolen, but my reception didnt miss a beat with this antenna adaptor

Pros: Easy Installation

Needed reception boost

Written By Louie, Knoxville, TN on Thursday, January 15, 2015

Crutchfield Customer Review (What's this?)

Worked better than expected. I actually now have better reception - was not expecting. Fit with stereo and OEM antenna was AOK.

Pros: Works as it should - improved reception.

Cons: None

Works!

Written By McGurdy, Tennessee on Tuesday, January 13, 2015

Crutchfield Customer Review (What's this?)

It works!

Pros: Does its job!

Silverado

Written By leximusprime, Arizona on Tuesday, January 13, 2015

Crutchfield Customer Review (What's this?)

Definitely Plug-N-Play for after market stereo install

plug n play

Written By Mike, Kalamazoo, Michigan on Thursday, January 08, 2015

Crutchfield Customer Review (What's this?)

Plug n play

Pros: Plug n play

easy install

Written By Patrick, Arizona on Wednesday, January 07, 2015

Crutchfield Customer Review (What's this?)

super easy install and works great

Pros: NA

Cons: NA

Metra 40-GM10 Antenna Adapter

Written By Anonymous, California on Saturday, January 03, 2015

Crutchfield Customer Review (What's this?)

perfect just long enough

Adapter

Written By Brad, New England, ND on Thursday, January 01, 2015

Crutchfield Customer Review (What's this?)

Radio won't wo without it

Pros: Perfect fit

Cons: Required for aftermarket install

Easy Peasy

Written By ScottS, Amarillo, TX on Thursday, January 01, 2015

Crutchfield Customer Review (What's this?)

Solid product, easy installation.

Pros: Works as advertised.

Cons: None

Serves its purpose

Written By AHMc, Alabama on Tuesday, December 30, 2014

Crutchfield Customer Review (What's this?)

It serves ifs purpose. What more can I ask?

Pros: It works.

Cons: none

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Lake Jackson, TX on Monday, December 29, 2014

Crutchfield Customer Review (What's this?)

Simple and easy to install!

Just works!!!!!

Written By Anonymous, Tennessee on Sunday, December 28, 2014

Crutchfield Customer Review (What's this?)

The Metra 40-GM10 Antenna Adapter just works and attaches perfectly.

Metra 40-GM10 Antenna Adapter

Written By Anonymous, NY on Sunday, December 28, 2014

Crutchfield Customer Review (What's this?)

It worked ok

Pros: The correct ends

Cons: I feel the 90 degree end could have been shorter for my radios application

Awesome

Written By nealjerry20, Texas on Thursday, December 25, 2014

Crutchfield Customer Review (What's this?)

Works perfectly

antenna

Written By scott, augusta, ks on Sunday, December 21, 2014

Crutchfield Customer Review (What's this?)

It fit perfectly!

Metra 40-GM10 Antenna Adapter

Written By ROBR, Connecticut on Tuesday, December 16, 2014

Crutchfield Customer Review (What's this?)

Simple

good product

Written By Anonymous, Fairbanks, AK on Wednesday, December 10, 2014

Crutchfield Customer Review (What's this?)

Good quality part and it fit just like it said it would.

Pros: Good price

Cons: None

Metra 40-GM10 Antenna Adapter

Written By Chinoy, Illinois on Wednesday, November 26, 2014

AAAAAAA++++++++

Pros: AAAAAAA++++++++

Easy to install.

Written By DP, Longview, TX on Sunday, November 16, 2014

Crutchfield Customer Review (What's this?)

Works well and easy to install.

Works great

Written By Brotherwind, T or C NM on Thursday, November 13, 2014

Crutchfield Customer Review (What's this?)

Works just great. No problems. Plugs right in. Excellent reception.

Pros: As easy as anything can be. Adapted perfectly into my Bose system.

Cons: Nothing I could see or find.

shorts out the AM band

Written By kaessy, Santa Barbara, Calif on Monday, October 27, 2014

Crutchfield Customer Review (What's this?)

No AM radio until I used the adapter that came with the radio and not the one sold in the install kit

Pros: none

Cons: shorted out the AM radio band

Metra 40-GM10 Antenna Adapter

Written By D. M., Cottonwood, AZ on Thursday, October 23, 2014

Crutchfield Customer Review (What's this?)

Perfect fit for my GM car.

Pros: Fit.

Metra 40-GM10 Antenna Adapter

Written By Anonymous, pa on Tuesday, October 14, 2014

Crutchfield Customer Review (What's this?)

easy install

Metra 40-GM10 Antenna Adapter

Written By Tim E, Elmira NY on Sunday, October 12, 2014

Crutchfield Customer Review (What's this?)

Great extension

Pros: Exact fit

Cons: None

99 Silverado

Written By LHutton510, California on Sunday, October 05, 2014

Crutchfield Customer Review (What's this?)

Plugs into pioneer deh3600ub perfectly and plugs into my 99 Silverado correctly. Attend strength is great

Pros: Plug n play

Cons: None

Metra 40-GM10 Antenna Adapter

Written By Jrodjam, Chicago IL on Saturday, October 04, 2014

Crutchfield Customer Review (What's this?)

No reason not to give 5 stars. sounds good, is long enough and fits well

antenna adapter

Written By Anonymous, Leipsic, OH on Friday, October 03, 2014

Crutchfield Customer Review (What's this?)

Easy hook up

Pros: Simple

Cons: N/A

antenna adapter

Written By Jedediah, Pensacola area on Thursday, October 02, 2014

Crutchfield Customer Review (What's this?)

good product.. and it came free with the purchase... can't beat it.

Pros: worked great

Cons: none

Fixes the "GM Problem"

Written By Anonymous, Gainesville, FL on Thursday, October 02, 2014

Crutchfield Customer Review (What's this?)

Fixes the "GM Problem" -- non-standard antenna plug.

Pros: Easy to use Does its job

Cons: None

Makes things easier

Written By David, Maine on Tuesday, September 30, 2014

Crutchfield Customer Review (What's this?)

Well built and no worries of the ends coming off.

Pros: Fits very snug and the length this adds to the antenna wire is extremely helpful.

Cons: None

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Herndon, PA on Monday, September 29, 2014

Crutchfield Customer Review (What's this?)

No problems get interface with existing equipment.

Metra 40-GM10 Antenna Adapter

Written By Josh, Boardman Or on Sunday, September 28, 2014

Crutchfield Customer Review (What's this?)

Works as expected.

Pros: Easy to use.

Cons: None

Metra 40-Gm10

Written By Steve, Mission, TX on Saturday, September 27, 2014

Crutchfield Customer Review (What's this?)

Easy install, great sound

Installation

Written By Keith, Wilmington, MA on Tuesday, September 23, 2014

Crutchfield Customer Review (What's this?)

This was a direct plug in connection.

Pros: ease of mating to old antenna

Cons: nothing

Metra 40-GM10 Antenna Adapter

Written By John, Fallbrook, CA on Monday, September 22, 2014

Crutchfield Customer Review (What's this?)

Helps a lot with spacing between antenna connection and better reception quality.

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Hemet, CA on Saturday, September 20, 2014

Crutchfield Customer Review (What's this?)

Connection was easy.

Pros: Perfect fit

Helps with install

Written By NS, Indiana on Thursday, September 18, 2014

Crutchfield Customer Review (What's this?)

Helps out with tight space installs

antenna adapter

Written By Brian G, Reno. NV on Thursday, September 11, 2014

Crutchfield Customer Review (What's this?)

Plugs right in

Pros: Easy to use

Cons: None

Worked great.

Written By ShaneB, Missouri on Tuesday, September 09, 2014

Crutchfield Customer Review (What's this?)

Plugged right in, no hassles. Worked great. And it was free with radio purchase.

just what i needed

Written By jroman, rockford,il on Sunday, September 07, 2014

Crutchfield Customer Review (What's this?)

perfect fit csr new exactly what i needed

Pros: perfect fit keeps your factory radio and adds satelite radio

Cons: none

quality antenna lead

Written By Robert X, Stapleton Georgia on Wednesday, September 03, 2014

Crutchfield Customer Review (What's this?)

very good quality no problems

Pros: length is perfect and quality is excellent

Cons: none

Perfect fit

Written By Churt, Weddington, NC on Tuesday, September 02, 2014

Crutchfield Customer Review (What's this?)

Simple to install, no instructions needed.

Pros: Plug and play...super simple

Cons: None

Antenna Adapter

Written By kg, Chesapeake VA on Friday, August 29, 2014

Crutchfield Customer Review (What's this?)

Worked as advertised!