What Is Posi Traction?

Are you curious to know what is posi traction? You have come to the right place as I am going to tell you everything about posi traction in a very simple explanation. Without further discussion let’s begin to know what is posi traction?

Traction control is a crucial feature in the automotive world, especially for those who seek enhanced performance, stability, and control when driving. One specific type of traction control system is known as Posi-Traction, also commonly referred to as “Posi.” In this blog, we’ll dive into what Posi-Traction is, how it works, and why it’s important for both everyday driving and high-performance vehicles.

What Is Posi Traction?

Posi-Traction, often abbreviated as “Posi,” is a proprietary term used by General Motors (GM) to describe a limited-slip differential (LSD) technology. A limited-slip differential is a mechanical device that allows power to be distributed to the wheels of a vehicle more evenly and efficiently, thereby improving traction and control, particularly in situations where one wheel has less traction than the other.

How Does Posi-Traction Work?

The primary function of Posi-Traction is to ensure that both drive wheels of a vehicle receive power from the engine, even if one of the wheels is slipping or has reduced traction. It does this by using a system of clutches or gears to manage the distribution of torque between the two wheels.

Here’s how Posi-Traction works:

  1. Normal Driving: During normal driving conditions, both wheels receive an equal amount of power, ensuring that they both rotate at the same speed.
  2. Slip or Traction Variance: When one wheel loses traction or slips, the limited-slip differential in a Posi-Traction system senses the difference in wheel speed.
  3. Torque Redistribution: In response to the traction variance, the Posi-Traction system redistributes torque (power) to the wheel with better traction, allowing it to maintain forward motion and control.
  4. Enhanced Traction: By distributing power effectively, Posi-Traction prevents one wheel from spinning excessively, which can lead to loss of control. This enhanced traction and stability can be especially beneficial in various driving conditions, such as snow, rain, mud, or during high-performance driving.

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Benefits Of Posi-Traction

Posi-Traction offers several benefits to drivers:

  1. Improved Traction: The primary advantage of Posi-Traction is enhanced traction on slippery or uneven surfaces. This feature helps prevent wheel spin and loss of control, making it valuable for off-road driving, racing, and everyday driving in adverse conditions.
  2. Enhanced Performance: For high-performance and sports cars, Posi-Traction can improve acceleration and handling, ensuring that power is effectively transferred to the road.
  3. Reduced Tire Wear: By preventing excessive wheel spin, Posi-Traction can help extend the life of tires, as tire wear is minimized.
  4. Stability: Posi-Traction contributes to vehicle stability and control, which is crucial for safe and predictable handling.
  5. Versatility: Posi-Traction can be applied to a wide range of vehicles, from trucks and SUVs to sports cars and performance vehicles.

It’s important to note that Posi-Traction is a specific term associated with GM vehicles. Other automakers use various names and acronyms for similar limited-slip differential technologies, such as Ford’s “Traction-Lok” and Chrysler’s “Sure Grip.”


Posi-Traction, or limited-slip differential technology, is a significant advancement in the automotive industry that improves traction, stability, and control. Whether you’re navigating through challenging off-road terrain or seeking improved performance on the track, Posi-Traction can make a substantial difference in the way your vehicle handles varying driving conditions. With this technology, drivers can enjoy a safer and more confident driving experience, regardless of where their journey takes them.


What Is The Difference Between Positraction And Traction Control?

Positraction serves to send power to the wheel with the greatest traction unlike the old style where if a wheel is spinning, the power goes to the spinning wheel and makes things worse. Traction control is engine control computer intervening when the rear wheel/s loose traction.

What Is The Difference Between Limited Slip And Posi Traction?

Posi Traction is merely the GM name for their Limited Slip axle. The posi traction was an option and used in GM’s rear wheel drive cars. A Locker axle will give more grip than a Limited Slip as it locks the axle and both drive wheels turn, whereas the Limited slip… only the wheel that has most traction turns.

What Does A Posi Differential Do?

The Eaton Posi limited slip differential (also know as Positraction) prevents wheel slip before it can get started. To do that, carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. When torque input increases the clamping load on the clutch packs increases.

Is Posi Traction Worth It?

We repeatedly mentioned that positraction increases control when you need it most. Be it any icy road or just generally rough terrain; you should be absolutely fine with this technology on board. Other benefits include fewer burnouts when the right rear tire spins more than the left one.

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