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Metra 40-GM20 Antenna Adapter

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

Item # 12040GM20

The Metra 40-GM20 adapter lets you connect an aftermarket antenna cable to the factory radio.

Find what Fits your car

The Metra 40-GM20 adapter lets you connect an aftermarket antenna cable to the factory radio.

California customers:
Please click here for your Proposition 65 warning.

Item # 12040GM20

In stock
$7.99

About the Metra 40-GM20 Antenna Adapter

Metra 40-GM20 adapter

The Metra 40-GM20 adapter lets you connect an aftermarket antenna cable to the factory radio. It has an OEM male plug on one end and a Motorola female jack on the other. You'll also need item 12040GM10 if you're installing a wired FM modulator with your factory radio. 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.

Metra 40-GM20 adapter

The Metra 40-GM20 adapter lets you connect an aftermarket antenna cable to the factory radio. It has an OEM male plug on one end and a Motorola female jack on the other. You'll also need item 12040GM10 if you're installing a wired FM modulator with your factory radio. 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.

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What's in the box:

MFR #40-GM20

Customer reviews

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Metra 40-GM20 Antenna Adapter reviews

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12 reviews

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Crutchfield response

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More details on the Metra 40-GM20 Antenna Adapter

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Features

Compatibility: The Metra AntennaWorks GM antenna adapter cable (40-GM20) converts the mini "barbed" or "barbless" antenna plug of a 1985-up GM factory radio to a standard motorola connection for installation of an aftermarket antenna in select 1985-up GM vehicles.

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
It was suggested by the Crutchfield website as a needed part for my installation. [ R  Nov 01, 2019 ]
A
I need to hook my factory GM antenna to my aftermarket radio. The description on this product stated that it allows you tut o do so. Never had any issues with Crutchfield pertaining to their knowledge of the products they sell. [ Arlindo  Mar 30, 2019 ]
A
Because it wasn't included with the tuner that fits my car. It should have been offered just like the installation kit, speakers etc that fit my particular vehicle. Maybe it's just me but I didn't see it as a choice when checking out. Shipping should have been free [ JACK  Nov 06, 2017 ]
A
Advised as needed [ John  Oct 06, 2017 ]
A
Recommend for proper fit. [ Bobby  May 01, 2017 ]
A
Great easy install. [ DONALD  May 11, 2016 ]
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1 question already asked

Q
I want to be sure my factory antenna (1995 Silverado k1500) will match up to my new pioneer double DIN with the adapter?
[ Giancarlo  Jul 28, 2019 ]
1 answer
A
My vehicle is a 1994 Pontiac Firehawk. With with the antenna adapter I was able to add in the aftermarket components with no problems.
[ George  Jul 29, 2019 ]

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