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Metra
Metra 40-GM31 General Motors Antenna Adapter Kit 1988-2013
Metra 40-GM31 General Motors Antenna Adapter Kit 1988-2013
Regular price
$39.99 USD
Regular price
Sale price
$39.99 USD
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The Metra 40-GM31 Antenna Adapter is designed for select General Motors vehicles. It provides the antenna connection needed when adding an external FM modulator with the factory radio and antenna.
At a Glance
- Vehicle-specific antenna adapter for select General Motors vehicles
- Supports adding an external FM modulator with the factory radio and antenna
- Two-cable FM modulator kit with mini barbless and Motorola-style connectors
- Helps maintain the AM/FM antenna connection during radio, antenna, navigation, or FM-modulator integration
- Designed to avoid cutting factory antenna wiring when matched to the correct vehicle and radio configuration
System / Fitment Notes
- FM-modulator antenna kit for factory radio and factory antenna integration
Exact Vehicle Compatibility
Find your vehicle below, then match the model year and factory-equipment details in the same row. Factory radio, amplifier, navigation, trim, speaker location, and connector differences can change which installation parts are required. If anything differs, contact MCOR before ordering.
| Make | Model | Years | Factory Equipment / Qualifier |
|---|---|---|---|
| Buick | Century | 1990-1996 | — |
| Buick | Century | 1997-2003 | — |
| Buick | Century | 2004-2005 | — |
| Buick | Electra | 1990 | — |
| Buick | LeSabre | 1995 | — |
| Buick | LeSabre | 1996 | — |
| Buick | LeSabre | 1997-1999 | — |
| Buick | Park Avenue | 1995 | — |
| Buick | Park Avenue | 1996 | — |
| Buick | Park Avenue | 1997-2004 | — |
| Buick | Park Avenue | 2005 | — |
| Buick | Regal | 1995-1999 | — |
| Buick | Regal | 2000-2004 | — |
| Buick | Riviera | 1996-1999 | — |
| Buick | Roadmaster | 1995-1996 | — |
| Buick | Skylark | 1996-1998 | — |
| Cadillac | Catera | 1997-2001 | — |
| Cadillac | DeVille | 1996-1999 | column shift |
| Cadillac | DeVille | 1996-1999 | console shift |
| Cadillac | DeVille | 2000-2005 | — |
| Cadillac | Eldorado | 1996-1999 | — |
| Cadillac | Eldorado | 2000-2002 | — |
| Cadillac | Escalade | 1999-2000 | — |
| Cadillac | Escalade, Escalade EXT | 2002 | — |
| Cadillac | Seville | 1992-1993 | column shift |
| Cadillac | Seville | 1992-1993 | console shift |
| Cadillac | Seville | 1994-1995 | column shift |
| Cadillac | Seville | 1994-1995 | console shift |
| Cadillac | Seville | 1996 | — |
| Cadillac | Seville | 1997 | — |
| Cadillac | Seville | 1997-2001 | — |
| Cadillac | Seville | 2002-2004 | — |
| Chevrolet | Astro Van | 1991-1995 | — |
| Chevrolet | Astro Van | 1996-2005 | — |
| Chevrolet | Beretta | 1991-1996 | — |
| Chevrolet | C/K Pickup | 1995-2000 | 2001-up see Silverado |
| Chevrolet | Camaro | 1993-1996 | — |
| Chevrolet | Camaro | 1997-2002 | — |
| Chevrolet | Caprice | 1994-1996 | — |
| Chevrolet | Cavalier | 1991-1994 | — |
| Chevrolet | Cavalier | 1995-1999 | — |
| Chevrolet | Cavalier | 2000 | — |
| Chevrolet | Cavalier | 2001-2005 | — |
| Chevrolet | Classic | 2004-2005 | a.k.a. Malibu |
| Chevrolet | Classic | 2004-2005 | a.k.a. Malibu Classic |
| Chevrolet | Corsica | 1991-1996 | — |
| Chevrolet | Corvette | 1990-1993 | — |
| Chevrolet | Corvette | 1994-1996 | — |
| Chevrolet | Express | 1996-2000 | — |
| Chevrolet | G-Series Van | 1988-1996 | — |
| Chevrolet | Impala | 1994-1996 | — |
| Chevrolet | Impala | 2000-2005 | — |
| Chevrolet | Lumina | 1990-1994 | — |
| Chevrolet | Lumina | 1995-2001 | — |
| Chevrolet | Lumina APV | 1993-1996 | — |
| Chevrolet | Malibu | 1997-2000 | — |
| Chevrolet | Malibu | 2001-2003 | — |
| Chevrolet | Monte Carlo | 1995-1999 | — |
| Chevrolet | Monte Carlo | 2000-2001 | — |
| Chevrolet | Monte Carlo | 2002-2005 | — |
| Chevrolet | S-10 Blazer | 1995-1997 | — |
| Chevrolet | S-10 Blazer | 1998-2001 | — |
| Chevrolet | S-10 Blazer | 2002 | With DIN & 1/2 factory radio |
| Chevrolet | S-10 Blazer | 2002 | With double DIN factory radio |
| Chevrolet | S-10 Blazer | 2003-2005 | — |
| Chevrolet | S-10 Pickup | 1994-1997 | — |
| Chevrolet | S-10 Pickup | 1998-2001 | — |
| Chevrolet | S-10 Pickup | 2002 | With DIN & 1/2 factory radio |
| Chevrolet | S-10 Pickup | 2002 | With double DIN factory radio |
| Chevrolet | S-10 Pickup | 2003-2004 | — |
| Chevrolet | Silverado 1500, 2500 | 1999-2002 | — |
| Chevrolet | Silverado 3500 | 1999-2000 | — |
| Chevrolet | Silverado 3500 | 2001 | commercial |
| Chevrolet | Silverado 3500 | 2001-2002 | — |
| Chevrolet | Silverado 3500 | 2002 | commercial |
| Chevrolet | SSR | 2003-2006 | — |
| Chevrolet | Suburban | 1995-1999 | — |
| Chevrolet | Suburban | 2000-2002 | — |
| Chevrolet | Suburban | 2003-2006 | — |
| Chevrolet | Tahoe | 1995-1999 | — |
| Chevrolet | Tahoe | 2000-2002 | — |
| Chevrolet | Tahoe | 2003-2006 | — |
| Chevrolet | Venture | 1997-1999 | — |
| Chevrolet | Venture | 2000-2005 | — |
| GMC | C/K Pickup | 1995-1998 | — |
| GMC | Envoy | 1998-2001 | — |
| GMC | Envoy | 2002-2009 | — |
| GMC | G-Series Van | 1988-1996 | — |
| GMC | Jimmy | 1994 | — |
| GMC | Jimmy | 1995-1997 | — |
| GMC | Jimmy | 1998-2001 | a.k.a. Jimmy Envoy |
| GMC | S-15 Sonoma | 1994-1997 | — |
| GMC | Safari | 1996-2005 | — |
| GMC | Savana | 1996-2000 | — |
| GMC | Savana | 2001-2002 | — |
| GMC | Savana | 2003-2007 | — |
| GMC | Sierra | 2003-2006 | — |
| GMC | Sierra 1500 | 1999-2002 | — |
| GMC | Sierra 2500 | 1999 | — |
| GMC | Sierra 2500/2500 HD | 2000-2002 | — |
| GMC | Sierra 3500 | 2001-2002 | — |
| GMC | Sierra Classic | 2007 | — |
| GMC | Sonoma | 1998-2001 | — |
| GMC | Sonoma | 2002 | With DIN & 1/2 factory radio |
| GMC | Sonoma | 2002-2003 | With double-DIN factory radio |
| GMC | Sonoma | 2003-2004 | — |
| GMC | Suburban | 1995-1999 | — |
| GMC | Yukon | 1995-1999 | — |
| GMC | Yukon Denali | 1999-2000 | — |
| GMC | Yukon Denali, Yukon XL Denali | 2001-2002 | — |
| GMC | Yukon, Yukon XL | 2000-2002 | — |
| Oldsmobile | Achieva | 1993-1995 | — |
| Oldsmobile | Achieva | 1996-1998 | — |
| Oldsmobile | Alero | 1999-2000 | — |
| Oldsmobile | Aurora | 1995-2000 | — |
| Oldsmobile | Bravada | 1995-1997 | — |
| Oldsmobile | Bravada | 1998-2001 | — |
| Oldsmobile | Bravada | 2002-2004 | — |
| Oldsmobile | Cutlass | 1997-1999 | — |
| Oldsmobile | Cutlass Ciera | 1995-1996 | — |
| Oldsmobile | Cutlass Supreme | 1995-1997 | — |
| Oldsmobile | Eighty-Eight | 1994-1999 | — |
| Oldsmobile | LSS | 1996-1999 | — |
| Oldsmobile | Ninety-Eight | 1994-1996 | — |
| Oldsmobile | Silhouette | 1997-1999 | — |
| Oldsmobile | Silhouette APV | 1993-1996 | — |
| Pontiac | Bonneville | 1994-1999 | — |
| Pontiac | Firebird, Firebird Trans Am | 1993-2002 | — |
| Pontiac | Grand Am | 1996-2000 | — |
| Pontiac | Grand Am | 2001-2005 | — |
| Pontiac | Grand Prix | 1994-1996 | — |
| Pontiac | Grand Prix | 1997-2003 | — |
| Pontiac | Montana | 1999 | — |
| Pontiac | Montana | 2000-2004 | — |
| Pontiac | Montana | 2005 | — |
| Pontiac | Sunfire | 1995-1999 | — |
| Pontiac | Sunfire | 2000-2005 | — |
| Pontiac | TransSport | 1997-1999 | — |
| Pontiac | TransSport APV | 1993-1996 | — |
| Saturn | S Series | 1995-1999 | — |
Fitment note: Year and model alone are not always enough to confirm compatibility. Match every factory-equipment qualifier shown for your vehicle, and contact MCOR Automotive if the radio, amplifier, navigation, speaker, camera, trim, or connector details are uncertain.
Installation Notes
- Confirm exact year, make, model, factory radio, antenna connector style, and radio being installed before installation
- Test-fit the antenna adapter and review manufacturer instructions before final assembly
- Additional dash kits, wiring harnesses, steering wheel control interfaces, or factory feature-retention parts may be required
- Professional installation is recommended for best results
What’s in the Box
- Antenna adapter kit with two cables
Technical Specifications
- Brand: Metra
- Model: 40-GM31
- Product Type: Antenna adapter
- Application: Vehicle antenna integration
- Connector Type: Two-cable FM modulator kit with mini barbless and Motorola-style connectors
Identifiers & Packaging
- MPN: 40-GM31
- UPC: 086429007080
- Sold As: Kit
- Included Components: Antenna adapter kit with two cables
Why Buy From MCOR Automotive
- Authorized retailer for the brands we sell
- Specialists in vehicle audio integration, radio replacement parts, and installation accessories
- 22+ years of professional automotive electronics experience
- Expert support for compatibility verification and proper setup
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