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2002-2019 Freightliner M2

How to upgrade the stereo system in your M2

Freightliner M2

In brief: This Crutchfield Research Garage article gives you an overview of your M2's stock stereo system and your aftermarket upgrade options. We'll tell you all about:

Then, use our vehicle selector to find the gear that will fit your truck.

Overview of the Freightliner M2

Yes, the M2 is a great big, very serious, all-business work truck. We know. But that doesn't mean the driver shouldn't be able to enjoy a bit of music, get good directions from a nav system, or keep in touch with other truck drivers by using a CB radio. Driving a truck is hard work, no matter what the truck is used for, so give yourself (or your drivers) the best in sound and connectivity.

Replacing the radio and speakers is a good start, but we can help you with CBs, sound deadening, cameras, protective floor liners, and more. If you're outfitting a fleet, you can contact Crutchfield Business to get the best deal on the gear you need, plus our legendary customer service.

Freightliner m2 radio

You can replace the radio with a variety of single-DIN aftermarket models (Crutchfield Research Photo)

The factory stereo system

The stock stereo is a single-DIN (2" tall) AM/FM model that plays through two 5-1/4" speakers in the dash. This system is adequate for driving around listening to the radio, but it’s a long way from a high-performance system, especially in a truck this large and loud. New gear will bring better sound to your rounds.

Installing a video receiver with a retractable screen can be a bit of a challenge, but we can help you figure things out if you have questions.

Give us a call and talk to one of our Advisors before you order. And remember that your Crutchfield stereo purchase includes free tech support for the life of your gear. Our Techs are right here in Virginia and ready to help you with this type of installation.

Detailed stereo and speaker removal instructions

ResearchNotes image
With step-by-step disassembly instructions and plenty of up-close, detailed photos, our exclusive Crutchfield ResearchNotes™ takes the guesswork out of removing the factory stereo and speakers. It's free with your Crutchfield order, or you can purchase one separately for just $9.99.

We did our research on a “daycab” M2, but this truck is also available in extended cab and crew cab versions. If you have one of those and you know something we don’t about the speaker layout, we’d like to talk to you. Check out this informative article to learn more about our "crowdsourced" vehicle research process. If that sounds like something you'd want to do, contact us via the email addy in the article.

freightliner m2 radio removal

The radio removal process is pretty simple in the M2(Crutchfield Research Photo)

Removing the factory radio

Before you start working on your stereo upgrade project, secure the truck using the yellow parking brake button on the dash that disengages the air pressure, then disconnect the negative battery cable to prevent any electrical short.

Insert the DIN tools (included with your order) into the holes in the radio faceplate until you hear a “click” from the receiver. Spread the DIN tools apart, pull the receiver out of the dash, then disconnect everything and remove the radio.

Using a small flat blade screwdriver, straighten the tabs securing the DIN sleeve to the dash, then pull the DIN sleeve out of the cavity.

You may need to to cut out the factory radio's rear support bracket to make room for your new stereo. This isn’t hard, but work carefully, know what’s around the work area, and always wear eye protection.

Tools Required: DIN Tools, small flat blade screwdriver

Read our Car Stereo Buying Guide for shopping tips and advice.

Shop for car stereos that fit your Freightliner M2

freightliner m2 dash speakers

For better sound, you should definitely upgrade the 5-1/4" dash speakers (Crutchfield Research Photo)

Removing the factory speakers

The factory dash speakers are 4-ohm models, so look for aftermarket speakers with similar impedance when you’re shopping.

You’ll start your upgrade by removing the eleven Torx T30 screws securing the dash trim panel, which you’ll then remove. Remove the four Torx T30 screws exposed by when you remove the dash panel, then remove the four Torx T30 screws from the top dash panel along the windshield.

Remove the four Torx T30 screws from the passenger's side vent trim panel, then pry the panel out and remove it. That’ll expose a Torx T30 screw, which you’ll remove before lifting up and removing the top dash trim panel.

Remove the four Torx T30 screws securing the speaker to the factory bracket, then disconnect the harness and remove the speaker.

You’ll be able to re-use the factory speaker grilles and brackets when you install same-size speakers, but an aftermarket wiring harness is not available. You'll need to splice, solder, or use Posi-Products speaker connectors to connect the new speakers to the truck’s wiring.

Tools Required: Panel tool, Torx T30 driver

Read our Car Speakers Buying Guide for more information

Shop for speakers that fit your Freightliner M2

More bass in your M2

There is precious little space for any sort of subwoofer in the M2 daycab, but if you're thinking about doing something creative, give us a call and talk to a Crutchfield Advisor.

The extended cab and crew cab models obviously offer more space behind the front seats, so there are possibilities. You can measure it yourself and decide what'll work, but if you do, please get in touch (see link above) and tell us what you've learned.


With Dynamat in the your M2's doors, you'll be able to seal in sound

Other options for your M2

Here are some other ideas for you to consider. You'll probably have a few of your own, so please share your notes and photos in our Custom Car Showroom.

Noise reduction for improved sound

The M2 is obviously not exactly a Corvette when it comes to aerodynamic efficiency, and exterior noise is just a fact of life. There's no way to totally eliminate wind and road noise in this (or any big truck, really), but installing some Dynamat in the doors can really seal in sound and let you enjoy your music to the fullest.

Stay in touch with a CB radio

Sometimes a cell phone isn't enough. Besides, a big truck like this really should have a CB radio. We have a nice selection of CB's that'll help keep your whole fleet stay in touch.

Add a rear-view camera

The M2 is a big, tall, and unwieldy vehicle whether you’re in traffic or in a crowded parking lot. For safety's sake (yours and everybody else's) we offer rear-view cameras from Alpine, Kenwood, Sony, Pioneer, Accele, and more. Some are designed to work with same-brand receivers only, but others have a composite video connector and will work with almost any video receiver. We also offer commercial-grade systems that are designed for big trucks like this one.

Add a security system

Installing a security system in your M2 isn't easy (security systems rarely are), but it's definitely a good idea, especially if it's going to be parked overnight with important, valuable things inside. Our Crutchfield Advisors can help figure out what you need to get the job done, but we usually recommend taking your truck and your security gear to a professional installer.

Let's get started!

Ready to shop? Use our vehicle selector to find the gear that will fit your car or truck. If you have questions of your own, give us a shout via phone or chat.

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