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Axxess AXUSBM-A

Factory USB Port Retention Adapter in select 2009-2025 vehicles from Chevrolet, GMC, Cadillac

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Factory USB Port Retention Adapter in select 2009-2025 vehicles from Chevrolet, GMC, Cadillac

• Factory USB Retention Adapter
• Retains the OE USB port on compatible stereos
• Compatible with select 2009-2025 vehicles from Chevrolet, GMC, Cadillac

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List price $5.99
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• Factory USB Retention Adapter
• Retains the OE USB port on compatible stereos
• Compatible with select 2009-2025 vehicles from Chevrolet, GMC, Cadillac

Metra 40-EU55

Antenna Adapter for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

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Antenna Adapter for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

• Antenna adapter
• For select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Use for replacing vehicle radio
• Male Motorola connector and power wire on one end
• Male European-style FAKRA on the other end

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List price $22.99
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• Antenna adapter
• For select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Use for replacing vehicle radio
• Male Motorola connector and power wire on one end
• Male European-style FAKRA on the other end

Scosche VWA4B Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2000-2026 vehicles from Audi, Chevrolet, Ram

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Connect your factory antenna to a new aftermarket radio for select 2000-2026 vehicles from Audi, Chevrolet, Ram

• Audi/BMW/VW Antenna Adaptor
• adapts factory antenna to aftermarket radio
• select 2000-2026 vehicles from Audi, Chevrolet, Ram Vehicles

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• Audi/BMW/VW Antenna Adaptor
• adapts factory antenna to aftermarket radio
• select 2000-2026 vehicles from Audi, Chevrolet, Ram Vehicles

Axxess AXRSC Wiring Interface

Install a New Car Stereo and Retain Steering Wheel Audio Controls and Backup Camera and Other Factory Features in select 2008-2024 vehicles from Ford, GMC, Chevrolet

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Install a New Car Stereo and Retain Steering Wheel Audio Controls and Backup Camera and Other Factory Features in select 2008-2024 vehicles from Ford, GMC, Chevrolet

• Direct connection to the factory harness
• Compatible with select 2008-2024 vehicles from Ford, GMC, Chevrolet
• Designed for amplified or non-amplified systems
• Designed for select aftermarket stereos
• Retains R.A.P., SWC audio controls, safety chimes, backup camera
• Provides accessory power and NAV outputs
• Color coded wires for easy installation
• No major cutting or splicing required

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• Direct connection to the factory harness
• Compatible with select 2008-2024 vehicles from Ford, GMC, Chevrolet
• Designed for amplified or non-amplified systems
• Designed for select aftermarket stereos
• Retains R.A.P., SWC audio controls, safety chimes, backup camera
• Provides accessory power and NAV outputs
• Color coded wires for easy installation
• No major cutting or splicing required

Axxess AXDIS-GMLN30

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2018-2023 vehicles from Chevrolet, GMC

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Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2018-2023 vehicles from Chevrolet, GMC

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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List price $262.99
-10% $235.99

In stock

Only 1 Left!

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

Metra 95-3315B (Black)

Install a New Double DIN Car Stereo in select 2018-2024 Terrain

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Install a New Double DIN Car Stereo in select 2018-2024 Terrain

• Double DIN Install Dash Kit
• Compatible with select 2018-2024 Terrain
• Accommodates ISO Double DIN mount
• Painted to match factory dash color
• High-grade ABS plastic construction
• Factory style texture

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List price $111.99
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Ships in 10-14 days

• Double DIN Install Dash Kit
• Compatible with select 2018-2024 Terrain
• Accommodates ISO Double DIN mount
• Painted to match factory dash color
• High-grade ABS plastic construction
• Factory style texture

Axxess AXTC-LN30

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2019-2025 vehicles from Chevrolet, GMC, Cadillac

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Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2019-2025 vehicles from Chevrolet, GMC, Cadillac

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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List price $219.99
-10% $197.99

In stock

Only 3 Left!

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

Axxess AXDIS-GMLN31

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2017-2023 vehicles from Chevrolet, GMC

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Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2017-2023 vehicles from Chevrolet, GMC

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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List price $262.99
-10% $235.99

In stock

Only 3 Left!

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

Axxess AXRSCH-GM30

Install a New Car Stereo and Retain Steering Wheel Audio Controls and Other Factory Features in select 2019-2023 vehicles from GMC, Chevrolet

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Install a New Car Stereo and Retain Steering Wheel Audio Controls and Other Factory Features in select 2019-2023 vehicles from GMC, Chevrolet

• Direct connection to the factory harness
• Compatible with select 2019-2023 vehicles from GMC, Chevrolet
• Designed for non-amplified vehicles and select aftermarket stereos
• Retains R.A.P., SWC audio controls, safety chimes
• Provides accessory power and NAV outputs
• No major cutting or splicing required

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List price $77.99
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In stock

Only 1 Left!

• Direct connection to the factory harness
• Compatible with select 2019-2023 vehicles from GMC, Chevrolet
• Designed for non-amplified vehicles and select aftermarket stereos
• Retains R.A.P., SWC audio controls, safety chimes
• Provides accessory power and NAV outputs
• No major cutting or splicing required

Axxess AXRSCH-GM31

Install a New Car Stereo and Retain Steering Wheel Audio Controls and Other Factory Features in select 2019-2023 vehicles from GMC, Chevrolet

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Install a New Car Stereo and Retain Steering Wheel Audio Controls and Other Factory Features in select 2019-2023 vehicles from GMC, Chevrolet

• Direct connection to the factory harness
• Compatible with select 2019-2023 vehicles from GMC, Chevrolet
• Designed for non-amplified vehicles
• Designed for select aftermarket stereos
• Retains R.A.P., SWC audio controls, safety chimes
• Provides accessory power and NAV outputs
• Color coded wires for easy installation
• No major cutting or splicing required

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Fits your Terrain
List price $77.99
-10% $69.99

In stock

Only 1 Left!

• Direct connection to the factory harness
• Compatible with select 2019-2023 vehicles from GMC, Chevrolet
• Designed for non-amplified vehicles
• Designed for select aftermarket stereos
• Retains R.A.P., SWC audio controls, safety chimes
• Provides accessory power and NAV outputs
• Color coded wires for easy installation
• No major cutting or splicing required

Axxess AXTC-LN31

Install a New Car Stereo and Retain Steering Wheel Controls, Factory Backup and Other Factory Features in select 2017-2023 vehicles from Chevrolet, GMC

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Install a New Car Stereo and Retain Steering Wheel Controls, Factory Backup and Other Factory Features in select 2017-2023 vehicles from Chevrolet, GMC

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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List price $219.99
-10% $197.99

In stock

Only 3 Left!

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

Metra AD-EU5

Amplified Antenna Adapter Cable for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

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Amplified Antenna Adapter Cable for select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen

• Amplified antenna adapter cable
• Compatible with select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Converts factory antenna to standard male Motorola plug
• Includes power wire to provide 12V signal
• Features "Mini-style" (FAKRA) connector
• Plug and play connection, no cutting of wires required

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List price $13.99
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Available

Ships in 10-14 days

• Amplified antenna adapter cable
• Compatible with select 2000-2026 vehicles from Audi, Chevrolet, Volkswagen
• Converts factory antenna to standard male Motorola plug
• Includes power wire to provide 12V signal
• Features "Mini-style" (FAKRA) connector
• Plug and play connection, no cutting of wires required

Crux GM49S-EXT

Install a New Car Stereo and Retain Steering Wheel Controls, Backup Camera and Other Factory Features in select 2019-2023 vehicles from GMC, Chevrolet

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Install a New Car Stereo and Retain Steering Wheel Controls, Backup Camera and Other Factory Features in select 2019-2023 vehicles from GMC, Chevrolet

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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List price $110.25
-36% $70.88

In stock

Only 2 Left!

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

Crux SWRGM-49R

Install a New Car Stereo and Retain Steering Wheel Controls, Backup Camera and Other Factory Features in select 2019-2023 vehicles from Chevrolet, GMC

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Install a New Car Stereo and Retain Steering Wheel Controls, Backup Camera and Other Factory Features in select 2019-2023 vehicles from Chevrolet, GMC

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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found car based on your search
Fits your Terrain
List price $220.50
-36% $141.75

In stock

Only 2 Left!

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

Crux SWRGM-49S

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2019-2024 vehicles from Chevrolet, GMC, Cadillac

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Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2019-2024 vehicles from Chevrolet, GMC, Cadillac

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

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VIP Product Get $14.18 in rewards to spend later

found car based on your search
Fits your Terrain
List price $220.50
-36% $141.75

In stock.

• Direct connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

iDataLink Maestro RR Interface Module

Universal Stereo Replacement Interface Module for iDataLink Maestro Compatible Stereos

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Universal Stereo Replacement Interface Module for iDataLink Maestro Compatible Stereos

• Universal stereo replacement interface module
• Connects to iDataLink-compatible stereos
• Retains SWC, voice commands, etc.
• Enhances multimedia experiences with exclusive gauges, vehicle info, parking assistance, climate control, and radar detection

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Universal – fits most vehicles.
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List price $229.99
-17% $189.99

In stock

• Universal stereo replacement interface module
• Connects to iDataLink-compatible stereos
• Retains SWC, voice commands, etc.
• Enhances multimedia experiences with exclusive gauges, vehicle info, parking assistance, climate control, and radar detection

iDataLink Maestro RR2 Interface Module

Universal Stereo Replacement Interface Module for iDataLink Maestro Compatible Stereos

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Universal Stereo Replacement Interface Module for iDataLink Maestro Compatible Stereos

• Advance stereo replacement interface for select vehicles
• Offers exclusive infotainment retention
• Adds support for additional vehicles
• Enables Bluetooth programming directly from mobile device
• Retains OnStar, SYNC, Uconnect, and more

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Universal – fits most vehicles.
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Metra 40-SIRXM Antenna Adapter

Connect your factory SiriusXM antenna to a new aftermarket radio

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Connect your factory SiriusXM antenna to a new aftermarket radio

• Adapts factory satellite antenna connector
• Located at factory radio location to an aftermarket style connector
• Length: 3 feet
• Universal application

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List price $33.99
-29% $23.99

In stock

Only 1 Left!

• Adapts factory satellite antenna connector
• Located at factory radio location to an aftermarket style connector
• Length: 3 feet
• Universal application

Install Bay IBR74

Dual USB Pass Through Extension Panel

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Dual USB Pass Through Extension Panel

• Dual Male to Female USB Extension Cable
• 3 Feet Long
• Full Data Transfer
• Flush or Surface Mount Your USB Ports

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List price $37.99
-11% $33.99

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Only 2 Left!

• Dual Male to Female USB Extension Cable
• 3 Feet Long
• Full Data Transfer
• Flush or Surface Mount Your USB Ports

Metra 40-UV41 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for

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Connect your factory antenna to a new aftermarket radio for

• Universal Antenna Adapter
• Vehicles
• Female to female cable

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Universal – fits most vehicles.
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List price $14.99
-13% $12.99

In stock

Only 2 Left!

• Universal Antenna Adapter
• Vehicles
• Female to female cable

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    FAQ for Aftermarket Stereo Installation Accessories in 2021 Terrain

    Q: Can I upgrade or change the Aftermarket Stereo Installation Accessories in 2021 GMC Terrain?

    A: Yes this page includes all the best Aftermarket Stereo Installation Accessories that work in your Terrain.

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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.