1.888.955.6000
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Metra 40-GM10 Antenna Adapter

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

for matching vehicles with all car stereos $119+ for matching vehicles with all car stereos $119+
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  • Metra 40-GM10 Antenna Adapter

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  • Metra 40-GM10 Antenna Adapter

 

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.

See more info on this item

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.

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Product Research
What's in the box?

Download owner's manual

  • GM antenna adapter cable

Our Product Research Team

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.

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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Metra 40-GM10 Antenna Adapter Reviews

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5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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.
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

Good.

Written By DougG, Springfield, MO on Monday, August 18, 2014
Crutchfield Customer Review (What's this?)
 
works as described
Pros:
all
Cons:
none
Was this review helpful?    Yes | No
 
5 out of 5

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
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5 out of 5

Worked great

Written By Anonymous, Verona VA on Wednesday, August 13, 2014
 
Worked great
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Blythewood SC on Monday, August 11, 2014
Crutchfield Customer Review (What's this?)
 
Exact fit!
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3 out of 5

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.
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
3 out of 5

antenna adapter

Written By roq, georgetown,tx on Monday, July 28, 2014
Crutchfield Customer Review (What's this?)
 
really made installation easy
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5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

adapter

Written By memo, Miami, FL on Monday, July 28, 2014
Crutchfield Customer Review (What's this?)
 
Adapted fine
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5 out of 5

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.
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5 out of 5

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
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5 out of 5

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.
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5 out of 5

Metra 40-GM10 Antenna Adapter

Written By william t, annapolis, md on Thursday, July 17, 2014
Crutchfield Customer Review (What's this?)
 
works great
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5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Lexington, Kentucky on Monday, July 14, 2014
Crutchfield Customer Review (What's this?)
 
Works fine
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Al, Farmville, NC on Saturday, July 12, 2014
Crutchfield Customer Review (What's this?)
 
Great, worked perfectly.
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

Nice unit

Written By Anonymous, Lincoln Ne on Tuesday, July 01, 2014
Crutchfield Customer Review (What's this?)
 
Easy to use.
Was this review helpful?    Yes | No
 
5 out of 5

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 ! ;-)
Was this review helpful?    Yes | No
 
5 out of 5

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!
Was this review helpful?    Yes | No
 
5 out of 5

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
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Atlanta on Wednesday, June 18, 2014
Crutchfield Customer Review (What's this?)
 
Easy and works
Was this review helpful?    Yes | No
 
5 out of 5

perfect adaptor

Written By Doc De Bose, Elizabeth, NJ on Wednesday, June 18, 2014
Crutchfield Customer Review (What's this?)
 
Perfect fit works as intended and adds some " wiggle" room in case you need to pull the head unit back out no worries about this adapter being too short where it pulls away n o worries about needing to hold the head unit with one hand just to reach in with the other due to short or exact cut lengths. Product is great !!!
Pros:
Length fit and quality all are a major plus
Cons:
NONE
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5 out of 5

Works well

Written By MDP, Woodbury, MN on Monday, June 16, 2014
Crutchfield Customer Review (What's this?)
 
I still don't know why GM did this but the adapter works well.
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5 out of 5

Antenna Adapter

Written By LRPLOWBOY, Little Rock, AR on Monday, June 16, 2014
Crutchfield Customer Review (What's this?)
 
plugged right into the factory antenna as it should
Was this review helpful?    Yes | No
 
2 out of 5

Too big

Written By Ty, Gettysburg PA on Monday, June 16, 2014
Crutchfield Customer Review (What's this?)
 
Way to long and not at all flexible made installation difficult
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5 out of 5

Pleased

Written By SHollen, Raleigh,NC on Wednesday, June 11, 2014
Crutchfield Customer Review (What's this?)
 
Pleased with the reception of my new antenna.
Pros:
Good quality reception, easy to install.
Cons:
None so far.
Was this review helpful?    Yes | No
 
5 out of 5

Exactly what I needed

Written By Drew M., Florida on Wednesday, June 11, 2014
Crutchfield Customer Review (What's this?)
 
Worked perfect to connect factory antenna in my 2000 silverado to a pioneer headunit
Pros:
Simple Quality
Cons:
Little too long
Was this review helpful?    Yes | No
 
5 out of 5

just what I needed

Written By Nicole, Houston, TX on Wednesday, June 11, 2014
Crutchfield Customer Review (What's this?)
 
Great condition and was an exact match
Pros:
Very easy to install crisp and clean condition
Cons:
None
Was this review helpful?    Yes | No
 
4 out of 5

Installation

Written By ALC, 30107 on Monday, June 02, 2014
Crutchfield Customer Review (What's this?)
 
Works well with conversion
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3 out of 5

didnt need it

Written By CLB, Terre Hill Pa on Monday, June 02, 2014
Crutchfield Customer Review (What's this?)
 
This was unnecessary as my truck has this plug with an adapter to go to the stock stereo. I just took that one off an plugged it in.
Pros:
would do the job.
Cons:
extra cable could get in the way, unnecessary part.
Was this review helpful?    Yes | No
 
5 out of 5

Simple and easy

Written By Roland, Hamden, CT on Thursday, May 29, 2014
Crutchfield Customer Review (What's this?)
 
Easily connected my new head unit to my stock GM antenna with RDS with no issues
Pros:
Plugs right in, no issues
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By ScotM, IL on Wednesday, May 28, 2014
Crutchfield Customer Review (What's this?)
 
Worked fine
Pros:
Worked fine
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By BrianB, Chicago on Wednesday, May 28, 2014
Crutchfield Customer Review (What's this?)
 
Installs perfectly in my 1998 Olds Bravada with JVC KD-HDR71BT.
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Yadkineville,NC on Sunday, May 25, 2014
Crutchfield Customer Review (What's this?)
 
Plug factory antenna wire in and this goes to the radio, straight forward
Pros:
Just a simple plug in
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Plugged right in

Written By Wildcat1, Paducah, KY on Saturday, May 24, 2014
Crutchfield Customer Review (What's this?)
 
Fit right in, extended the length of the factory cable, made installation easier.
Pros:
Free, made cable longer
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Easy and simple

Written By Rwilson, Sioux Falls, SD on Tuesday, May 20, 2014
Crutchfield Customer Review (What's this?)
 
Simple and easy
Pros:
Gave more room
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By MikeO, Denver, CO on Sunday, May 18, 2014
Crutchfield Customer Review (What's this?)
 
Does just what it says!
Pros:
Tight connections.
Cons:
Could be a bit more pliable but I'm grasping at straws.
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By don w, center harbor,nh on Saturday, May 17, 2014
Crutchfield Customer Review (What's this?)
 
quick fit
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5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Anonymous, Carterville,IL on Wednesday, May 14, 2014
Crutchfield Customer Review (What's this?)
 
Part of the package! Awesome deal!
Was this review helpful?    Yes | No
 
5 out of 5

easy install

Written By Anonymous, Indiana on Monday, May 12, 2014
Crutchfield Customer Review (What's this?)
 
Plugs right in no worries when installing
Pros:
Easy installation
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Part of my stereo I purchased.

Written By annamm318, Siler City, NC on Friday, May 09, 2014
Crutchfield Customer Review (What's this?)
 
My antenna was broken off, so this is working.
Was this review helpful?    Yes | No
 
5 out of 5

Excellent customer service

Written By Terry, 55902 on Wednesday, May 07, 2014
Crutchfield Customer Review (What's this?)
 
Once again totally excellent product totally excellent customer service and after the sales support as well
Pros:
It looks great sounds great fit great
Cons:
There are no con
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5 out of 5

It gets the job done.

Written By Wenjen4, Allen, Ok. on Friday, May 02, 2014
Crutchfield Customer Review (What's this?)
 
Works well, easy install, included free!
Pros:
Did I mention it's free?
Cons:
None.
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By RyuunosukePanda, Peoria, ILL on Wednesday, April 30, 2014
Crutchfield Customer Review (What's this?)
 
Required add-on if you own a GM made vehicle.
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5 out of 5

Plug and play

Written By Samuel, Hot springs,va on Tuesday, April 29, 2014
Crutchfield Customer Review (What's this?)
 
Great item fits great great quality
Pros:
Free
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Jim W, Cornel, IL on Monday, April 28, 2014
Crutchfield Customer Review (What's this?)
 
Worked as designed.
Pros:
Easy installation.
Was this review helpful?    Yes | No
 
5 out of 5

Didn't end up needing it

Written By Matt, San Diego CA on Sunday, April 27, 2014
Crutchfield Customer Review (What's this?)
 
This looked identical to the one that came with my wiring harness so I ended up trying that one and it worked perfectly. No biggie since this was included for free on Crutchfield with the purchase of my deck. Thanks guys!
Pros:
Looks quality
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5 out of 5

Metra 40-GM10 Antenna Adapter

Written By TX454SS, Houston, TX on Sunday, April 27, 2014
Crutchfield Customer Review (What's this?)
 
Provides needed clearance as opposed to OEM antenna coax to allow new radio to insert fully into dash.
Pros:
Provides enough clearance between new radio and HVAC ductwork to allow new radio to be fully inserted into dash.
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4 out of 5

JVC Stereo

Written By Hank S., lawrence ma on Wednesday, April 23, 2014
Crutchfield Customer Review (What's this?)
 
I was referred to Crutchfield by a friend of mine and ordered the stereo got it in the prompt time. Ordered special GMOS connector because my car has on star and in the process of installing came to a problem at the gmos connections did not match up to the factory connections call customer service realized that it was the shipping issue send me a new one immediately I would rated 5 stars but because of the shipping the wrong part I don't think it was their fault but nonetheless. I would still continued to use Crutchfield in the future and refer them to a friend,
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5 out of 5

Metra 40-GM10 Antenna Adapter

Written By Anonymous, darlington sc on Sunday, April 20, 2014
Crutchfield Customer Review (What's this?)
 
great product
Pros:
good signal
Cons:
none
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5 out of 5

No hassle

Written By Anonymous, Olympian wa on Tuesday, April 15, 2014
Crutchfield Customer Review (What's this?)
 
It's free with cd player purchase
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5 out of 5

simple!

Written By Mitch C., Mount Pleasant ,Tx on Sunday, April 13, 2014
Crutchfield Customer Review (What's this?)
 
Made it easy to adapt antenna.
Pros:
Simple install, quality product.
Was this review helpful?    Yes | No
 
5 out of 5

Metra 40-GM10 Antenna Adapter

Written By AliS, Logan, UT on Sunday, April 13, 2014
Crutchfield Customer Review (What's this?)