How to Find Your Allison Transmission Serial Number Location

The Allison Transmission Serial Number is located on a small metal plate on the side of the transmission. The serial number consists of 11 characters and can be found below the barcode on the label.

Allison Transmission is a leading manufacturer of commercial-duty automatic transmissions. Their products are used in a wide range of vehicles, from heavy-duty trucks to buses and RVs. If you need to find the serial number on an Allison transmission, there are a few different places you can look.

The first place to check is on the transmission itself. There should be a metal plate with the serial number stamped into it. This plate is usually located on the side or top of the transmission.

If you can’t find the plate, or if the numbers are worn away, you can also try looking for a sticker with the serial number on it. This sticker is usually located near where the oil dipstick goes in. If you still can’t find the serial number, your best bet is to contact Allison Transmission directly.

They should be able to help you locate it based on your vehicle’s VIN (vehicle identification number).

Allison Transmission Troubleshooting

Transmission Serial Number Location Guides

Transmission Serial Number Location Guides

Alright, folks, let’s get to the heart of the matter—the actual location of the Allison Transmission Serial Number. We’ve talked about its importance, and the tools you’ll need, and even walked you through a general step-by-step guide. Now, let’s zero in on where you can typically find this elusive number.

General Location: The Transmission Case

In most Allison Transmissions, the serial number is located on the transmission case. This is the metal housing that encloses the mechanical components of the transmission. It’s usually visible from the underside of your vehicle.

Model-Specific Locations

Different Allison Transmission models may have serial numbers in different locations. Here’s a breakdown:


Side of the case


Rear end near the tail


Bottom near the pan


Top near the valve body

YouTube Video: Identifying Allison Transmission Models

Special Cases: Older Models and Custom Transmissions

If you have an older model or a custom-built Allison Transmission, finding the serial number might require a bit more detective work. In such cases, you may need to consult the owner’s manual or even contact Allison Transmission directly for guidance.

Verification: Double-check for Peace of Mind

Once you’ve located the serial number, it’s crucial to verify it. Use Allison Transmission’s official website or your vehicle’s documentation to confirm that the serial number matches.

Tools Required

Finding your Allison Transmission Serial Number isn’t just a task; it’s a treasure hunt. And like any treasure hunt, you’ll need the right tools.

Flashlight: Your Guiding Light

A good flashlight isn’t a luxury; it’s a necessity. You’ll be peering into the dark recesses of your vehicle, and you’ll need a light source that’s both powerful and maneuverable.

Mirror: Your Second Set of Eyes

Some serial numbers are located in places that are difficult to see directly. A telescoping inspection mirror will allow you to navigate these tight spots without having to disassemble half your vehicle.

Clean Cloth: The Unsung Hero

Last but not least, a clean cloth. You’ll likely encounter years’ worth of grime, oil, and dirt. A clean cloth will allow you to wipe away this filth, making the serial number visible.

Unveiling the Layers of Allison Transmission Serial Numbers

Fantastic! Now that we’ve navigated the main road, let’s take some scenic routes and delve deeper into the world of Allison Transmission Serial Numbers. These topics will not only enrich your understanding but also answer some questions you didn’t even know you had.

Common Mistakes to Avoid

When searching for your Allison Transmission Serial Number, there are some common mistakes that can throw a wrench in your plans.

Not Verifying the Number: Always double-check the serial number against official records. Incorrect numbers can lead to warranty issues and more.

Ignoring Safety Measures: Never underestimate the importance of safety. Always ensure your vehicle is secure before crawling underneath.

Using Inadequate Lighting: Poor visibility can lead to misreading the number. Always use a reliable flashlight.

How Serial Numbers Have Evolved

Serial numbers have come a long way since the inception of Allison Transmissions. Initially, they were simple numeric codes. Over time, they’ve evolved into complex alphanumeric strings that provide a wealth of information about the transmission.

GM Transmission Serial Number Search

If you’re looking to find the serial number on your GM transmission, there are a few places you can look. The most obvious place to start is on the transmission itself. Often, the serial number will be stamped onto the side of the case or on a plate attached to the case.

If you don’t see it there, it’s worth checking other areas such as underneath the pan (if it’s accessible) or on any tags that may be attached to electrical connectors. Another place to check is in your vehicle’s paperwork. When you buy your car, truck, or SUV, the salesperson should have given you a form called the “vehicle identification number” or VIN.

This 17-digit code contains a lot of information about your vehicle, including where it was made and what options it came with. But buried in all that data is also your transmission’s serial number. If you don’t have access to your VIN for whatever reason, there’s one last place you can try: contacting GM directly.

They should be able to look up your serial number using just your vehicle’s make, model, and year.

Allison Transmission Serial Number Lookup

If you’re looking for information on Allison Transmission serial number lookup, you’ve come to the right place. Here at Everything Truck Parts, we know a thing or two about trucks and transmissions, so we’re here to help. Allison Transmission is a leading manufacturer of commercial-duty automatic transmissions and hybrid propulsion systems.

With over 80 years of experience in the industry, Allison Transmission has developed a reputation for quality and reliability. In fact, Allison Transmissions are used in a variety of applications including refuse trucks, transit buses, RV motorhomes, fire trucks, and more. So how can you find out what transmission model you have?

The best way is to locate the serial number plate which is typically located on the driver’s side of the transmission housing. Once you have the serial number, you can use our online tool to look at the specific model and year that your transmission was manufactured. Still have questions?

Our team of experts is always here to help. Give us a call or send us an email and we’ll be happy to assist you with your Allison Transmission serial number lookup needs!

Allison Transmission Serial Number Location



Where is the Transmission Serial Tag Located?

One of the most common questions we get here at Transworks Transmission is “Where is the transmission serial tag located?”.

The answer, unfortunately, is not as simple as it could be. Depending on the make and model of your vehicle, the location of the transmission serial tag can vary quite a bit.

In some cases, it may be on the side of the transmission case, while in others it may be on the bellhousing or even inside the pan.

If you’re having trouble finding the serial tag on your particular transmission, we recommend checking out a service manual for your make and model of vehicle.

With these manuals readily available online these days, they’re a great resource for tracking down specific information like this.

Once you have located the transmission serial tag, be sure to write down all of the numbers and letters so that you can reference them later if needed.

How Do I Find Out What Year My Transmission Is?

If you’re not sure what year your transmission is, there are a few ways to find out. One way is to look up the serial number. This can usually be found on a sticker or plate on the side of the transmission.

If you have the serial number, you can contact the manufacturer and they should be able to tell you what year it is. Another way to find out is to take it to a mechanic and have them take a look at it. They should be able to tell you what year it is based on the model and make.

Can I Look Up My Transmission by Vin Number?

If you’re looking to find out information about your car’s transmission, a VIN number lookup can be a helpful tool. However, it’s important to note that not all information about your transmission will be available through a VIN lookup.

In most cases, you’ll only be able to find out basic information such as the type of transmission and whether or not it has been rebuilt.

That being said, if you’re simply looking for general information about your car’s transmission, a VIN lookup can be a quick and easy way to get what you need.

To perform a VIN lookup, simply enter the 17-digit VIN number into an online search engine such as Google or Bing.

You should then be presented with a variety of results that will provide you with basic information about your car’s transmission.

What is an Allison Transmission Serial Number?

An Allison Transmission Serial Number is a unique identifier assigned to each Allison Transmission unit. It’s a combination of numbers and letters that provides specific information about your transmission, such as the model, manufacturing date, and other vital data.

How Often Do I Need to Check It?

Generally, you won’t need to check your serial number frequently. However, it’s essential to know where it is and how to find it for situations like repairs, selling your vehicle, or dealing with recalls.


Phew! We’ve journeyed through the intricate world of Allison Transmission Serial Numbers, and we hope you’re now well-equipped to locate yours with confidence.

From understanding its importance to the tools you’ll need, and from the step-by-step guide to deep dives and FAQs, we’ve covered it all.

Remember, knowing your serial number is not just a one-time affair; it’s a long-term commitment to ensuring a smooth ride.


  • Alex Gearhart

    Alex Gearhart, an automotive expert specializing in transmissions, has over a decade of hands-on industry experience. With extensive knowledge in manual and automatic systems, Alex is passionate about educating car enthusiasts on vehicle maintenance. As the chief author at, Alex simplifies complex concepts for readers, helping them make informed decisions about their vehicles. Outside of work, Alex enjoys road trips, restoring classic cars, and exploring new automotive technologies.

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