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2004 GMC Sierra 2500

Easily improve your factory OEM stereo's sound system

Better sound with a factory radio for 2004 GMC Sierra 2500

Some factory stereos do not make it easy to be replaced, but you can still add an amp or sub via an integration harness to improve your sound. Additionally, we have custom speaker solutions to make upgrading your sound easy! Lastly, we also have add-ons to upgrade your factory display to get integrate features from a smartphone (via Apple CarPlay or Android Auto) or a backup camera.

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PAC AAI-GM12

Dual Auxiliary Audio Input Interface for select 2000-2012 vehicles from Chevrolet, GMC, Pontiac

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Dual Auxiliary Audio Input Interface for select 2000-2012 vehicles from Chevrolet, GMC, Pontiac

• Dual auxiliary audio input interface
• Allows for direct interface of any pre-amp level audio source to the factory radio
• Compatible with select 2000-2012 vehicles from Chevrolet, GMC, Pontiac

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found car based on your search
Fits your Sierra 2500
5
List price $119.00
-54% $54.99

In stock

• Dual auxiliary audio input interface
• Allows for direct interface of any pre-amp level audio source to the factory radio
• Compatible with select 2000-2012 vehicles from Chevrolet, GMC, Pontiac

NVX BOOST Box - 1999-2006 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVECG1-D12S

For select 1999-2006 vehicles from GMC, Chevrolet Extended Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

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For select 1999-2006 vehicles from GMC, Chevrolet Extended Cab - Dual 12" 800W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 12" S Series Subwoofers
• Compatible with select 1999-2006 vehicles from GMC, Chevrolet
• 400 watts RMS (800 watts Peak)
• Final Impedance: 1-ohm

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Fits select models only.
Add details to confirm fitment.
List price $455.99
-19% $369.99

In stock

Only 3 Left!

NVX BOOST Box - 1999-2006 Chevrolet Silverado, GMC Sierra - LVE-GM-SLVECG1-D10S

For select 1999-2006 Silverado 1500 / 3500 / 2500 / 2500 HD and Sierra 3500 / 1500 / 2500 / 2500 HD and SIerra 2500 HD Extended Cab - Dual 10" 700W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

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For select 1999-2006 Silverado 1500 / 3500 / 2500 / 2500 HD and Sierra 3500 / 1500 / 2500 / 2500 HD and SIerra 2500 HD Extended Cab - Dual 10" 700W RMS Loaded Down Firing BOOST Sealed Truck Enclosure

• Custom-Fit BOOST Sealed truck enclosure with 2 10" S Series Subwoofers
• Compatible with select 1999-2006 Silverado 1500 / 3500 / 2500 / 2500 HD and Sierra 3500 / 1500 / 2500 / 2500 HD and SIerra 2500 HD
• 350 watts RMS (700 watts Peak)
• Final Impedance: 1-ohm

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Fits select models only.
Add details to confirm fitment.
List price $431.99
-19% $349.99

In stock

Only 1 Left!

Kicker CS Series Factory Speaker Replacement Package

Fits select 1999-2006 Sierra 3500 / 1500 / 2500

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Fits select 1999-2006 Sierra 3500 / 1500 / 2500

• Kicker 5.25" Coaxial Speakers
• Kicker 4" x 6" Coaxial Speakers
• Metra Speaker Harnesses and Adapter
• Plug-n-play Installation

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additional information required
Fits select locations in your Sierra 2500.
Add vehicle details to confirm exact location.
170
List price $262.94
-38% $163.79

In stock

• Kicker 5.25" Coaxial Speakers
• Kicker 4" x 6" Coaxial Speakers
• Metra Speaker Harnesses and Adapter
• Plug-n-play Installation

JBL STAGE1 51F Front Door Speaker Replacement Kit

Fits Select select 1995-2014 vehicles from GMC, Chevrolet

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Fits Select select 1995-2014 vehicles from GMC, Chevrolet

• 150 watts Peak Each, 30 watts RMS Each
• Mylar Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your Sierra 2500
149
List price $117.97
-38% $72.97

In stock

• 150 watts Peak Each, 30 watts RMS Each
• Mylar Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

Infinity Reference Series Factory Speaker Upgrade

Fits select 1999-2006 Sierra 1500 / 3500 / 2500

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Fits select 1999-2006 Sierra 1500 / 3500 / 2500

• 180 watts Peak Each, 60 watts RMS Each
• 135 watts Peak Each, 45 watts RMS Each
• Textile Edge-driven tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your Sierra 2500
150
List price $332.87
-24% $252.87

In stock

• 180 watts Peak Each, 60 watts RMS Each
• 135 watts Peak Each, 45 watts RMS Each
• Textile Edge-driven tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

NVX N-Series Complete Speaker Upgrade Kit

5.25" and 4x6" N-Series 2 Way Coaxial Car Speaker Upgrade Kit for 1999-2006 GMC Sierra

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5.25" and 4x6" N-Series 2 Way Coaxial Car Speaker Upgrade Kit for 1999-2006 GMC Sierra

• Includes a pair of NVX NSP525 and NVX NSP46 coaxial speakers
• Designed for select 1999-2006 Sierra 3500 / 1500 / 2500
• Speaker adapters and wiring harnesses included
• Plug-and-play installation

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additional information required
Fits select locations in your Sierra 2500.
Add vehicle details to confirm exact location.
210
List price $178.95
-38% $110.44

In stock

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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36
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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5
List price $319.99
-19% $259.99

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iDataLink Maestro SR (ADS-MSR) 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
• Retains factory steering wheel control
• Retains backup camera with any stereos
• Retains digital fade, DSP, gain, camera controls in iDataLink-ready stereos

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List price $169.99
-18% $139.99

In stock

Only 3 Left!

• Universal stereo replacement interface
• Retains factory steering wheel control
• Retains backup camera with any stereos
• Retains digital fade, DSP, gain, camera controls in iDataLink-ready stereos

Crux ACP-WL

Wireless CarPlay Dongle for Select Factory and Aftermarket Stereos with Apple CarPlay

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Wireless CarPlay Dongle for Select Factory and Aftermarket Stereos with Apple CarPlay

• Wireless CarPlay Dongle
• Easily converts wired CarPlay to wireless
• Works with Kenwood, Pioneer, JVC, Sony, and Alpine stereos
• Includes interface and USB-A to USB-C cable
• Plug and play connection

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List price $317.10
-36% $203.85

In stock

Only 1 Left!

• Wireless CarPlay Dongle
• Easily converts wired CarPlay to wireless
• Works with Kenwood, Pioneer, JVC, Sony, and Alpine stereos
• Includes interface and USB-A to USB-C cable
• Plug and play connection

Crux ACP-WLX

Wireless CarPlay and Android Auto Dongle for Select OEM and Aftermarket Stereos with CarPlay or Android Auto

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Wireless CarPlay and Android Auto Dongle for Select OEM and Aftermarket Stereos with CarPlay or Android Auto

• Wireless CarPlay and Android Auto dongle
• Converts wired CarPlay and Android Auto to wireless
• Works on select OEM and aftermarket stereos with CarPlay or Android Auto
• Easy and hassle-free plug and play installation

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List price $357.00
-36% $229.50

In stock.

• Wireless CarPlay and Android Auto dongle
• Converts wired CarPlay and Android Auto to wireless
• Works on select OEM and aftermarket stereos with CarPlay or Android Auto
• Easy and hassle-free plug and play installation

iDatalink Maestro ADS-MAR Wiring Interface

Factory Amplifier Replacement Interface for

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Factory Amplifier Replacement Interface for

• Factory digital amplifier replacement interface
• Compatible with
• Works with vehicle specific T-harnesses
• Compatible with an iDataLink-ready amplifier
• Supplies control data and audio

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1
List price $144.99
-17% $119.99

In stock

• Factory digital amplifier replacement interface
• Compatible with
• Works with vehicle specific T-harnesses
• Compatible with an iDataLink-ready amplifier
• Supplies control data and audio

Crux WVI-H

Wi-Fi Connectivity Integration and Audio/Video Interface for

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Wi-Fi Connectivity Integration and Audio/Video Interface for

• Enables wireless audio/video mirroring
• Accepts dual band (5GHz and 2.4GHz) Wi-Fi capability
• Uses your smartphone virtual remote control via Wi-Fi
• Provides an AV input which can also be used to add a camera

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List price $275.95
-38% $169.95

In stock

Only 1 Left!

• Enables wireless audio/video mirroring
• Accepts dual band (5GHz and 2.4GHz) Wi-Fi capability
• Uses your smartphone virtual remote control via Wi-Fi
• Provides an AV input which can also be used to add a camera

Diamond Audio MSMP692LK24

1000W Peak (500W RMS) 6x9" 2-Way Coaxial Cut In-Speaker Lid Kit for

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1000W Peak (500W RMS) 6x9" 2-Way Coaxial Cut In-Speaker Lid Kit for

• 500 watts Peak Each, 250 watts RMS Each
• Horn Tweeter
• Impedance: 4 ohm
• Sensitivity: 101 dB

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$1,099.99

In stock

Only 2 Left!

• 500 watts Peak Each, 250 watts RMS Each
• Horn Tweeter
• Impedance: 4 ohm
• Sensitivity: 101 dB

JBL Stage3 627F + 6427 Complete Speaker Replacement Kit

Fits Select select 1995-2007 vehicles from GMC, Chevrolet

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Fits Select select 1995-2007 vehicles from GMC, Chevrolet

• 135 watts Peak Each, 45 watts RMS Each
• Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 92 dB

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Sierra 2500
153
List price $262.87
-23% $202.87

• 135 watts Peak Each, 45 watts RMS Each
• Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 92 dB

JBL Stage2 624 Front Speaker Replacement Kit

Fits select 1995-2014 vehicles from GMC, Chevrolet, Hummer

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Fits select 1995-2014 vehicles from GMC, Chevrolet, Hummer

• 240 watts Peak Each, 40 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

found car based on your search
Fits your Sierra 2500
156
List price $137.93
-41% $80.93

• 240 watts Peak Each, 40 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

JBL Stage2 634 + 524 Complete Speaker Replacement Kit

Fits Select select 1999-2007 vehicles from Chevrolet, GMC, Cadillac

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Fits Select select 1999-2007 vehicles from Chevrolet, GMC, Cadillac

• 250 watts Peak Each, 40 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Save 15% Off Package Deals at Checkout!
found car based on your search
Fits your Sierra 2500
167
List price $242.95
-35% $156.91

• 250 watts Peak Each, 40 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

NVX BOOST Box Package with Sundown Audio 12" Subwoofers

For select 1999-2006 vehicles from GMC, Chevrolet Extended Cab - Dual 12" BOOST Sealed Enclosure with Two SML-12 D4 Subwoofers

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For select 1999-2006 vehicles from GMC, Chevrolet Extended Cab - Dual 12" BOOST Sealed Enclosure with Two SML-12 D4 Subwoofers

• Custom Fit Dual 12" Sealed BOOST Box Package
• Compatible with select 1999-2006 vehicles from GMC, Chevrolet Extended Cab
• Includes Two Sundown Audio SML-12 D4 subwoofers
• 1200W Peak each / 600W RMS each
• 3/4" Medium Density Fiberboard (MDF) construction
• Durable premium carpet finish
• Subwoofer and enclosure not pre-assembled

Fits select models only.
Add details to confirm fitment.
List price $767.97
-18% $629.97

• Custom Fit Dual 12" Sealed BOOST Box Package
• Compatible with select 1999-2006 vehicles from GMC, Chevrolet Extended Cab
• Includes Two Sundown Audio SML-12 D4 subwoofers
• 1200W Peak each / 600W RMS each
• 3/4" Medium Density Fiberboard (MDF) construction
• Durable premium carpet finish
• Subwoofer and enclosure not pre-assembled

JBL Stage2 624 Front Door Speaker Replacement Kit

Fits Select select 1995-2014 vehicles from GMC, Chevrolet, Hummer

Go to item page Right Arrow Icon of Right Arrow

Fits Select select 1995-2014 vehicles from GMC, Chevrolet, Hummer

•240 watts Peak Each, 40 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

found car based on your search
Fits your Sierra 2500
156
List price $137.93
-41% $80.93

•240 watts Peak Each, 40 watts RMS Each
• PEI (Polyetherimide) Balanced Dome tweeters
• Injection Molded Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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    FAQ for Better sound with a factory radio in 2004 Sierra 2500

    Q: Can I upgrade or change the Better sound with a factory radio in 2004 GMC Sierra 2500?

    A: Yes this page includes all the best Better sound with a factory radio that work in your Sierra 2500.

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    • Owner's manual
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    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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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.