What Transmission Is In My Truck?

As an owner of a truck, knowing the type of transmission in your vehicle is essential. In this section, we will discuss the four main types of transmissions found in trucks and what to consider when choosing one.


Types of Transmissions in Trucks

Trucks have four main types of transmissions: hydraulic, automatic, semi-automatic, and manual. Understanding the differences between them can help you decide which one is best suited for your needs.

  • Hydraulic transmission: This type of transmission uses fluid to power the movement of gears.
  • Automatic transmission: These transmissions use computer-controlled hydraulics to select the correct gear ratios automatically.
  • Semi-automatic transmission: This type of transmission allows the driver to shift gears manually while allowing the computer-controlled system to do it for them.
  • Manual transmission: This type of transmission is the most common in trucks and uses a system of gears and clutches that the driver must select manually.

Considerations When Choosing a Transmission

When choosing a truck, it is essential to consider what type of transmission will work best for you. Each transmission type has advantages and disadvantages, and researching them can help you make an informed decision.

Can VIN Number Tell Your Transmission?

If you are buying a used car, you may wonder if the VIN can help determine the type of transmission it has. Unfortunately, the NHTSA VIN standard does not require OEMs to differentiate between automatic and manual transmissions in their VIN patterns. However, you can use tricks to identify the transmission, such as checking the car’s owner’s manual or looking for a shift knob on the center console. It is also best to ask the seller about the transmission type to make a more informed purchase.

How to Identify Your GM Transmission

Identifying the type of GM automatic transmission you have can be done by examining the transmission pan or valve body for stamped codes. Knowing the model number can help you determine its specs and maintenance needs.

How to Identify a 4L60 or 4L60E Transmission

To tell whether your vehicle has a 4L60 or 4L60E transmission, check the GVWR or count the number of bolts on the case. A 4L60 typically has 16 bolts, while a 4L60E has 18 bolts. You can also check the identification number on the transmission, which should start with “4L60” for a 4L60 and “4L60E” for a 4L60E.

Decoding a Transmission Tag

There are several ways to decode a transmission tag, such as using an online decoding tool, consulting a transmission specialist or qualified mechanic, or checking the car’s owner’s manual.


Identifying the transmission in your truck is essential for proper maintenance and repair. By understanding the types of transmissions available, considering your needs, and using the tricks and tools available, you can determine which transmission is in your truck and make informed decisions about maintenance and repairs. Consulting a qualified mechanic or transmission specialist is always the best way to ensure accurate information.

About the author, Laurence Perkins

Laurence Perkins is the passionate car enthusiast behind the blog My Auto Machine. With over a decade of experience in the automotive industry, Perkins has knowledge and experience with a wide range of car makes and models. His particular interests lie in performance and modification, and his blog covers these topics in-depth. In addition to his own blog, Perkins is a respected voice in the automotive community and writes for various automotive publications. His insights and opinions on cars are highly sought-after.