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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678 Reviews

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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.

Metra 40-GM10 Antenna Adapter Reviews

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Works Perfect

Written By Anonymous, Alabama on Tuesday, July 28, 2015

Fit is better than last brand I had, and seems to have cleaned up the bad connection.

Metra 40-GM10 Antenna Adapter

Written By Wayne C., Texas on Monday, July 27, 2015

Crutchfield Customer Review (What's this?)

Easy and simple conversion from GMC antenna to aftermarket receiver antenna.

Pros: Easy and brainless installation

Cons: None

defective product

Written By Ron B, Connecticut on Thursday, July 16, 2015

This product was defective as received

Pros: None

Cons: Did not work

Crutchfield response on Wednesday, July 22, 2015 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

Great installation helper

Written By Dino, California on Tuesday, July 14, 2015

Crutchfield Customer Review (What's this?)

Excellent adapter. Helped make the install that much quicker and less hassle

Pros: great quality, just the right length

Cons: none

antenna adapter

Written By jim, New York on Monday, July 13, 2015

Crutchfield Customer Review (What's this?)

Great product, made well

Pros: Simple to hook up

Cons: None

Not good

Written By MT, Arkansas on Friday, July 10, 2015

Crutchfield Customer Review (What's this?)

Does not fit the factory cable on my 07 silverado

easy like sunday morning

Written By David J, Tennessee on Tuesday, July 07, 2015

Crutchfield Customer Review (What's this?)

This looks like a custom job!! easiest install ever!!

Pros: exact fit

Cons: none

antenna adaptor

Written By Rob, Wisconsin on Sunday, July 05, 2015

Crutchfield Customer Review (What's this?)

Simple no hassle works fits GMC Envoy xl

Metra 40-GM10 Antenna Adapter

Written By Anonymous, North Carolina on Saturday, July 04, 2015

Crutchfield Customer Review (What's this?)

Worked perfectly

No brainer...

Written By ChrisC, Alabama on Friday, July 03, 2015

Crutchfield Customer Review (What's this?)

Just plug in....Long enough to give you workable space...not too long to get in the way...

Pros: Ease of use

Cons: none

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Monroe City, MO on Monday, June 29, 2015

Crutchfield Customer Review (What's this?)

Worked great, free shipping, great price

Simple Item, Easily Installed

Written By Kahn the Installer, Wake Forest, NC on Friday, June 19, 2015

Crutchfield Customer Review (What's this?)

This item is so simple yet such a necessity. Easily installs and works like a dream.

Pros: Right angle end that goes into the radio makes install and routing easy and low profile.

Cons: A little long could be shorter.

why is this needed

Written By mvedwar, South Carolina on Monday, June 15, 2015

Crutchfield Customer Review (What's this?)

I have a GM car and this wasn't even close to fitting. Length was fine but the female end was too small for my existing antenna. Luckily my cord was already long enough to reach the radio so I threw this out.

Pros: None

Cons: Did not fit even though this was the recommended adaptor

Easy to install

Written By James, Lumberton, NJ on Thursday, June 11, 2015

Easy to install. It plugs into the aftermarket unit on one side and the antenna connector plugs into the other side.

Pros: Ease of install

Metra 40-GM10 Antenna Adapter

Written By PowerToTheMaxx, Illinois on Wednesday, June 10, 2015

Crutchfield Customer Review (What's this?)

Perfect for installation in 2004 Chevy Malibu Classic. Allows removal of removal of radio without having to fight a short wire.

Pros: Fits well, good radio reception

Metra 40-GM10 Antenna Adapter

Written By Luke S, Norfolk, va on Thursday, June 04, 2015

Crutchfield Customer Review (What's this?)

Did everything it was suppose to.

antenna adapter

Written By jim w, worcester ma. on Wednesday, June 03, 2015

Crutchfield Customer Review (What's this?)

Works as intended its a must in gm cars cant do without

Metra 40 - GM10 Antenna Adapter

Written By mw, Kansas on Tuesday, June 02, 2015

Crutchfield Customer Review (What's this?)

Worked good.

Pros: Works.

Cons: None

Does what it's supposed to do

Written By KYWes, Kentucky on Sunday, May 31, 2015

Crutchfield Customer Review (What's this?)

GM uses a smaller antenna connector than most other brand of car and it is smaller than more car stereos have. This adapter is necessary to mate the vehicle's antenna to the head unit. The antenna adapter I received was of high quality and fit just like it is supposed to.

Pros: Convenience, fit, functionality

Cons: None

Easy

Written By Redflagharley, San Antonio, TX on Sunday, May 31, 2015

Crutchfield Customer Review (What's this?)

Great price and installed with ease

Pros: Price

Cons: None

Perfection on a budget

Written By Walt, Huntsville, AL on Thursday, May 28, 2015

Crutchfield Customer Review (What's this?)

Fit perfectly no issues whatsoever

Pros: perfect fit

Cons: none

Came in Handy

Written By Chris, North Carolina on Tuesday, May 26, 2015

Crutchfield Customer Review (What's this?)

Made the install much easier

Pros: Long enough to work with while still outside the dash area

Cons: None

metra 40-gm10antenna adapter

Written By tap, Montana on Monday, May 25, 2015

Crutchfield Customer Review (What's this?)

just plug in and go

Pros: very easy to install

Cons: none

well made great price

Written By db, Alabama on Sunday, May 24, 2015

Crutchfield Customer Review (What's this?)

good part did as I needed it to

Pros: what i needed

Cons: none

It works

Written By Jake W, Oacoma, SD on Friday, May 22, 2015

Crutchfield Customer Review (What's this?)

Not much to say other than it works.

Pros: It works It was included with my stereo purchase

Cons: Nada

Perfect

Written By Shineka, Montgomery, AL on Wednesday, May 20, 2015

Crutchfield Customer Review (What's this?)

Great addition to installation kit.

Worked as needed

Written By Dave, Sleepy Hollow, IL on Wednesday, May 20, 2015

Crutchfield Customer Review (What's this?)

Worked as described

Cons: None

birthday gift

Written By T. Denny, cali. on Monday, May 18, 2015

Crutchfield Customer Review (What's this?)

Very easy install. Great features. Fantastic price.

Pros: Very small unit. Very universal.

Cons: Not easy to pair with my ipod touch

Metra 40-GM10 Antenna Adapter

Written By EJ, Colorado on Monday, May 18, 2015

Crutchfield Customer Review (What's this?)

Works well & does it's job.

Pros: Works

Cons: None

It works.

Written By Soldtonorm, Texas on Sunday, May 17, 2015

Crutchfield Customer Review (What's this?)

It works.

Pros: It plugs in and works.

antenna adapter

Written By Anonymous, Greensburg,Pa 15601 on Thursday, May 14, 2015

Crutchfield Customer Review (What's this?)

Yup...it's an antenna adapter. Quick and easy

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Michigan on Tuesday, May 12, 2015

Crutchfield Customer Review (What's this?)

Connected to radio and car antenna without any issues

Pros: Was easy to conenct

Cons: None

antenna adapter

Written By jk, port lavaca tx on Tuesday, May 12, 2015

Crutchfield Customer Review (What's this?)

Fits great!

Pros: Works well to existing coax

Cons: None

Perfect fit!

Written By Dan, Iowa on Sunday, May 10, 2015

Crutchfield Customer Review (What's this?)

This adapter was a perfect fit. Thanks!

Why do the antenna ports on radios have to be the same diameter and sh

Written By Jim R., by on Sunday, May 10, 2015

Crutchfield Customer Review (What's this?)

Once I realized that I had hooked up the antenna connection to the steering wheel control connections on the back of the radio, it worked beautifully !!

Pros: Easy to use , brainless.

Cons: Same size as the plug in for the steering wheel controls on the radio I installed.

Worked perfectly

Written By MikeB, West Virginia on Wednesday, May 06, 2015

Crutchfield Customer Review (What's this?)

Came free with my stereo purchase and worked perfectly.

Perfect fit on my 04 silverado

Written By Kevin, North Carolina on Wednesday, May 06, 2015

Crutchfield Customer Review (What's this?)

Perfect fit easy install

Pros: Perfect fit

Cons: None

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Alabama on Saturday, May 02, 2015

Crutchfield Customer Review (What's this?)

Worked Perfect

Pros: worked perfect

Cons: none

Worked Great!

Written By Chase L, La Crosse, Wisconsin on Wednesday, April 29, 2015

Crutchfield Customer Review (What's this?)

There is not much to say about a piece of wire, but what I will say is worked great. The connections into both the headunit and the stock antenna were tight. The radio reception did not degrade, which is good.

Pros: Worked great!

Cons: None

Wrong fit for my vehicle