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Metra 40-GM20 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1958-2024 vehicles from Chevrolet, GMC, Pontiac

Metra
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• Factory Radio with Mini "Barbed" Connector to Aftermarket Antenna Adapter
• select 1958-2024 vehicles from Chevrolet, GMC, Pontiac Vehicles

See compatible vehicles Learn more about the met-40gm20
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List price $7.99
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Description


Metra brand icon

Authorized dealer

General Features:

Equivalent to: Scosche MDARB & American International GM-7

Compatible Vehicles:

  • Buick
    • 2004 - 2005 Century
    • 1997 - 2003 Century
    • 1990 - 1996 Century
    • 1988 - 1989 Century
    • 1990 - 1990 Electra
    • 1988 - 1989 Electra
    • 2005 - 2009 LaCrosse/ Allure
    • 1988 - 1999 Le Sabre
    • 1988 - 2005 Park Avenue
    • 2004 - 2007 Rainier
    • 1990 - 1991 Reatta
    • 1988 - 1989 Reatta
    • 2000 2004 Regal
    • 1995 - 1999 Regal
    • 1988 - 1994 Regal
    • 2002 - 2007 Rendezvous
    • 1996 - 1999 Riviera
    • 1990 - 1995 Riviera
    • 1986 - 1989 Riviera
    • 1995 - 1996 Roadmaster
    • 1991 - 1994 Roadmaster
    • 1996 - 1998 Skylark
    • 1987 - 1995 Skylark
    • 1988 - 1989 Skyhawk
    • 2005 - 2008 Terraza
  • Cadillac
    • 1990 - 1992 Brougham
    • 1987 - 1989 Brougham
    • 1997 - 2001 Catera
    • 1990 - 1993 Coupe DeVille
    • 1988 - 1989 Coupe DeVille
    • 2000 - 2005 DeVille
    • 1996 - 1999 DeVille (column shift)
    • 1996 - 1999 DeVille (console shift)
    • 1994 - 1995 DeVille
    • 1994 - 1995 DeVille Concours
    • 1990 - 1993 DeVille
    • 1988 - 1989 DeVille
    • 2000 - 2002 Eldorado
    • 1996 - 1999 Eldorado
    • 1994 - 1995 Eldorado (console shift)
    • 1992 - 1993 Eldorado (console shift)
    • 1988 - 1991 Eldorado
    • 2003 - 2006 Escalade (ESV and EXT included)
    • 1999 - 2002 Escalade (ESV and EXT included)
    • 1993 - 1996 Fleetwood (including Brougham)
    • 1990 - 1992 Fleetwood (not Brougham)
    • 1990 - 1992 Fleetwood Brougham
    • 1988 - 1989 Fleetwood
    • 2002 - 2004 Seville
    • 1997 - 2001 Seville
    • 1997 - 1997 Seville
    • 1996 - 1996 Seville
    • 1994 - 1995 Seville (console shift)
    • 1992 - 1993 Seville (console shift)
    • 1988 - 1991 Seville
  • Chevrolet
    • 1996 - 2005 Astro Van
    • 1991 - 1995 Astro Van
    • 1985 - 1990 Astro Van
    • 2003 - 2006 Avalanche
    • 2002 - 2002 Avalanche
    • 1991 - 1996 Beretta
    • 1988 - 1990 Beretta (AC)
    • 1988 - 1990 Beretta (NON-AC)
    • 1992 - 1994 Blazer (Full Size)
    • 2003 - 2005 Blazer
    • 2002 - 2002 Blazer With Double-DIN Radio
    • 2002 - 2002 Blazer With DIN & 1/2 Radio
    • 1998 - 2001 Blazer
    • 1997 - 2002 Camaro
    • 1993 - 1996 Camaro
    • 1990 - 1992 Camaro
    • 1994 - 1996 Caprice
    • 1991 - 1993 Caprice
    • 2001 - 2005 Cavalier
    • 2000 - 2000 Cavalier
    • 1995 - 1999 Cavalier
    • 1991 - 1994 Cavalier
    • 1988 - 1990 Cavalier
    • 1990 - 1990 Celebrity
    • 2005 - 2006 Cobalt
    • 2004 - 2011 Colorado
    • 1991 - 1996 Corsica
    • 1988 - 1990 Corsica (AC)
    • 1988 - 1990 Corsica (NON-AC)
    • 2005 - 2011 Corvette
    • 1999 - 2004 Corvette
    • 1997 - 1998 Corvette
    • 1990 - 1996 Corvette
    • 1984 - 1989 Corvette
    • 2005 - 2006 Equinox
    • 1996 - 2007 Express van (full size)
    • 2000 - 2005 Impala
    • 1994 - 1996 Impala SS
    • 1995 - 2001 Lumina
    • 1990 - 1994 Lumina
    • 1993 - 1996 Lumina APV
    • 1990 - 1992 Lumina APV
    • 2008 - 2008 Malibu Classic
    • 2004 - 2007 Malibu/ Malibu Maxx
    • 2001 - 2003 Malibu
    • 2004 - 2005 Malibu Classic
    • 1997 - 2000 Malibu
    • 2000 - 2005 Monte Carlo
    • 1995 - 1999 Monte Carlo
    • 1995 - 2000 CK Pickup (01-up see Silverado)
    • 1988 - 1994 CK Pickup (Full Size)
    • 1995 - 1997 S-10 Blazer (98-up see Blazer)
    • 1990 - 1994 S-10 Blazer
    • 1988 - 1989 S-10 Blazer
    • 2003 - 2004 S-10 Pickup
    • 2002 - 2002 S-10 Pickup With Double-DIN Radio
    • 2002 - 2002 S-10 Pickup With DIN & 1/2 Radio
    • 1998 - 2001 S-10 Pickup
    • 1994 - 1997 S-10 Pickup
    • 1989 - 1993 S-10 Pickup
    • 2007 - 2007 Silverado Pickup Classic
    • 2003 - 2006 Silverado Pickup (all models)
    • 1999 - 2002 Silverado Pickup
    • 2003 - 2006 SSR
    • 2003 - 2006 Suburban
    • 2000 - 2002 Suburban
    • 1995 - 1999 Suburban
    • 1992 - 1994 Suburban
    • 1988 - 1991 Suburban
    • 2003 - 2006 Tahoe
    • 1995 - 2002 Tahoe
    • 1998 - 2004 Tracker
    • 2002 - 2009 Trailblazer
    • 2005 - 2008 Uplander
    • 2003 - 2007 Van (full size) Express
    • 2001 - 2002 Van (full size) Express
    • 1996 - 2000 Van (Full Size) Express
    • 1988 - 1995 Van (Full Size)
    • 2000 - 2005 Venture Van
    • 1997 - 1999 Venture Van
  • GMC
    • 2004 - 2011 Canyon
    • 2003 - 2003 Denali
    • 2002 - 2009 Envoy
    • 1998 - 2001 Envoy
    • 1998 - 2001 Jimmy / Envoy
    • 1995 - 1997 Jimmy
    • 1994 - 1994 Jimmy
    • 1988 - 1991 Jimmy (Full Size)
    • 2007 - 2007 Sierra Classic
    • 2003 - 2006 Sierra
    • 1995 - 1998 Sierra
    • 1988 - 1994 Sierra
    • 2003 - 2007 Savana Full Size Van
    • 2001 - 2002 Savana Full Size Van
    • 1996 - 2000 Savana Full Size Van
    • 2003 - 2004 Sonoma
    • 2002 - 2003 Sonoma With Double-DIN Radio
    • 2002 - 2002 Sonoma With DIN & 1/2 Radio
    • 1998 - 2001 Sonoma
    • 1994 - 1997 S-15/Sonoma
    • 1993 -1993 S-15/Sonoma
    • 1986 - 1992 S-15/Sonoma
    • 1996 - 2005 Safari Mini Van
    • 1991 - 1995 Safari Mini Van
    • 1985 1990 Safari Mini Van
    • 1988 - 1999 Suburban
    • 2003 - 2006 Yukon / Yukon XL
    • 1995 - 2006 Yukon / Denali
    • 2001 - 2002 Yukon XL
    • 1992 - 1994 Yukon
  • Hummer
    • 2004 - 2007 H2
    • 2003 - 2003 H2
    • 2006 - 2010 H3
  • Hyundai
    • 2003 - 2006 Santa Fe w/ Monsoon
  • Isuzu
    • 2003 - 2008 Ascender
    • 1998 - 2001 Hombre
  • Kia
    • 2003 - 2006 Sorento EX
    • 2003 - 2006 Sorento LX with Sport Package
  • Oldsmobile
    • 1996 - 1998 Achieva
    • 1993 - 1995 Achieva
    • 1992 - 1992 Achieva
    • 2001 - 2004 Alero
    • 1999 - 2000 Alero
    • 1995 - 2000 Aurora
    • 2002 - 2004 Bravada
    • 1998 - 2001 Bravada
    • 1995 - 1997 Bravada
    • 1991 - 1994 Bravada
    • 1997 - 1999 Cutlass
    • 1988 - 1991 Cutlass Calais
    • 1988 - 1996 Cutlass Ciera
    • 1988 - 1997 Cutlass Supreme
    • 1988 - 1999 Eighty-Eight
    • 2002 - 2002 Intrigue
    • 1998 - 2001 Intrigue
    • 1996 - 1999 LSS
    • 1994 - 1996 Ninety-Eight
    • 1989 - 1993 Ninety-Eight
    • 1988 - 1988 Ninety-Eight
    • 1997 - 1998 Regency
    • 1997 - 1999 Silhouette
    • 1993 - 1996 Silhouette APV
    • 1990 - 1992 Silhouette APV
    • 1988 - 1990 Touring Sedan
    • 1988 - 1993 Toronado
    • 1983 - 1987 Toronado
  • Pontiac
    • 1990 - 1991 6000
    • 1988 - 1989 6000
    • 1986 - 1987 6000
    • 2001 - 2005 Aztec
    • 1994 -1999 Bonneville
    • 1992 - 1993 Bonneville
    • 1987 -1989 Bonneville Safari Wagon
    • 1993 - 2002 Firebird/Trans AM
    • 1990 - 1992 Firebird/Trans AM
    • 1988 - 1989 Firebird/Trans AM
    • 2005 - 2008 G6
    • 2001 - 2005 Grand Am
    • 1996 - 2000 Grand AM
    • 1992 - 1995 Grand AM
    • 1990 - 1991 Grand AM
    • 1988 - 1989 Grand AM
    • 2004 - 2008 Grand Prix
    • 1994 - 2003 Grand Prix
    • 1992 - 1993 Grand Prix
    • 1990 -1991 Grand Prix
    • 1988 - 1989 Grand Prix
    • 1988 - 1993 Lemans
    • 2006 - 2007 Montana SV6 (Canada)
    • 2005 - 2005 Montana SV6
    • 2005 - 2005 Montana (non SV6)
    • 2000 - 2004 Montana
    • 1999 - 1999 Montana Mini Van
    • 1989 - 1994 Sunbird
    • 1988 - 1988 Sunbird
    • 2000 - 2005 Sunfire
    • 1995 - 1999 Sunfire
    • 2006 - 2006 Torrent
    • 1997 - 1999 Trans Sport
    • 1990 - 1996 Trans Sport APV
    • 2003 - 2008 Vibe
  • Saab
    • 2005 - 2009 9-7x
  • Saturn
    • 1991 - 1994 Saturn Sport Coupe
    • 1995 - 1999 Saturn
    • 2005 - 2007 Relay
  • Toyota
    • 2005 - 2008 Matrix
    • 2003 - 2004 Matrix

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 2011 Honda Ridgeline is not compatible. Change vehicle or See list of compatible similar products


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5
-28.58%

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2
-14.89%

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Item Details


Manufacturer:

Model Number:

40-GM20

Weight:

0.50lbs

Internal SKU:

met-40gm20

Internal Product ID:

12834

Customer Ratings & Reviews


Metra 40-GM20 Antenna Adapter thumbnail image

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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.