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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565 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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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!

Pros: easy to connect; perfect fit and zero reception issues

Cons: none

Good.

Written By DougG, Springfield, MO on Monday, August 18, 2014

Crutchfield Customer Review (What's this?)

works as described

Pros: all

Cons: none

Metra 40-GM10 Antenna Adapter

Written By JWV, St. Paul, MN on Saturday, August 16, 2014

Crutchfield Customer Review (What's this?)

Worked for my 2004 Oldsmobile Alero

Pros: Works, cheap, simple install

Cons: None

Worked great

Written By Anonymous, Verona VA on Wednesday, August 13, 2014

Worked great

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Blythewood SC on Monday, August 11, 2014

Crutchfield Customer Review (What's this?)

Exact fit!

Metra 40-GM10 Antenna Adapter

Written By Smiley, Page, Az on Thursday, August 07, 2014

Crutchfield Customer Review (What's this?)

works but could be at least half as long.

Pros: it did fit.

Cons: was much longer than needed.

antenna

Written By Trotter661, Kansas City, Missouri on Sunday, August 03, 2014

Crutchfield Customer Review (What's this?)

Great reception

Pros: Easy for installer

Cons: Needs to have better access

Antenna Adapter

Written By Freddy, Tulsa, OK on Thursday, July 31, 2014

Crutchfield Customer Review (What's this?)

Works perfectly for my new deck in my 2003 Corvette

Pros: Perfect fit, does what it is supposed to

Cons: none

kenwood install

Written By Darren, MA. on Tuesday, July 29, 2014

Crutchfield Customer Review (What's this?)

glad it came with install gear, oem to short.

Pros: free with stereo

Cons: none

antenna adapter

Written By roq, georgetown,tx on Monday, July 28, 2014

Crutchfield Customer Review (What's this?)

really made installation easy

Metra 40-GM10

Written By John, Dunkirk, MD on Monday, July 28, 2014

Crutchfield Customer Review (What's this?)

Easy installation, no issues

Pros: Installs as advertized

Cons: None

adapter

Written By memo, Miami, FL on Monday, July 28, 2014

Crutchfield Customer Review (What's this?)

Adapted fine

Perfect, Metra 40-GM10 Adapter

Written By shadetree, Iowa on Monday, July 28, 2014

Crutchfield Customer Review (What's this?)

A midsized GN install afforded no room I the back of the dash for anything but this 90 degree adapter.

Pros: 90 degree head unit end allows most GM unmodified dash installations.

Metra 40-GM10 Antenna Adapter

Written By zbee062, Anderson, sc on Tuesday, July 22, 2014

Crutchfield Customer Review (What's this?)

Installed in a 2008 Corvette with a DNX8890 HD system. Adapter is required to connect the GM antenna to the 890 unit. Product fitted and functioned as advertised.

Pros: Fits and works as advertised. Unlikely to vibrate loose.

Cons: None

Great and simple

Written By Chris, South Shore, KY on Thursday, July 17, 2014

Crutchfield Customer Review (What's this?)

Simple and works like it should.

Metra 40-GM10 Antenna Adapter

Written By william t, annapolis, md on Thursday, July 17, 2014

Crutchfield Customer Review (What's this?)

works great

Fine antenna adapter

Written By JeffS., Murfreesboro, TN on Wednesday, July 16, 2014

Crutchfield Customer Review (What's this?)

It works

Pros: It does what it's supposed to do.

Cons: None

Metra 40-GM10 Antenna Adapter in '07 Silverado Classic

Written By CK, Worthing, SD on Tuesday, July 15, 2014

Crutchfield Customer Review (What's this?)

easy to install, fit is great, fit is tight so won't vibrate out

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Lexington, Kentucky on Monday, July 14, 2014

Crutchfield Customer Review (What's this?)

Works fine

Makes the install easy

Written By MrMike, San Antonio, TX on Sunday, July 13, 2014

Crutchfield Customer Review (What's this?)

Just plug and play!

Pros: Easy to use and it fits properly

Cons: none

Metra 40-GM10 Antenna Adapter

Written By Al, Farmville, NC on Saturday, July 12, 2014

Crutchfield Customer Review (What's this?)

Great, worked perfectly.

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Arizona on Thursday, July 10, 2014

Crutchfield Customer Review (What's this?)

very neccessary.fits well.

Pros: fit great

Can't live without it

Written By Boz, Memphis, TN on Thursday, July 03, 2014

Crutchfield Customer Review (What's this?)

I didn't know newer vehicles had the small antennae plug. If not for the Crutchfield Advisor I would have missed it & not been able to install my old head unit into my new to me truck.

Pros: Easy to install

Nice unit

Written By Anonymous, Lincoln Ne on Tuesday, July 01, 2014

Crutchfield Customer Review (What's this?)

Easy to use.

metra gmos 40 gm10 ant. adapter

Written By cris f., hamilton,oh on Monday, June 30, 2014

Perfect length thumbs up on this one!!!

Pros: Crutchfield know what's need to be added on your project. U gotta love it ! ;-)

Metra antenna

Written By Gold M., Union, NJ on Sunday, June 29, 2014

Crutchfield Customer Review (What's this?)

Very basic installation! Just plug it in the hole! Haha!

Antenna Adapter

Written By Tim, Aurora, CO on Friday, June 20, 2014

Crutchfield Customer Review (What's this?)

This adapter worked great. The antenna cable in the car was a little short so the extra length really helped.

Pros: Worked Greate

Cons: None