Tow/haul mode is a feature found in many diesel, and some gas vehicles, that is designed to help improve performance and safety while towing heavy loads or hauling large payloads. When engaged, tow/haul mode alters the transmission shift points, throttle response, and other engine parameters to better handle the added weight and stress of towing.

Knowing when to use T/H mode and when you shouldn’t may not be as easy as you’d think. If

you’re using these features incorrectly, it may not be the best driving experience.

Generally, you would use tow/haul mode when towing a heavy load or hauling a large payload.

This mode is particularly useful when climbing hills or when driving in stop-and-go traffic, as it

helps to reduce the strain on the engine and transmission, while improving stability and control.

When you activate tow/haul mode, the transmission may hold gears longer before shifting,

allowing the engine to produce more power and torque. This can also help to reduce wear and

tear on the transmission and other drivetrain components, which can prolong their lifespan.

The Disadvantages of Using Tow Haul Mode

While this feature can be helpful, it can also be dangerous. You should never use it during icy or

slippery road conditions.

When using tow haul mode, you increase the amount of engine braking taking place, which can

cause your rear axle wheels to slide.

When this happens, the vehicle will swing around. This could cause an accident.

It's important to note that while tow/haul mode can help to improve performance and safety while

towing, it should not be used when driving without a load. This is because it can cause the engine

to work harder than necessary, which can lead to increased fuel consumption and unnecessary

wear and tear on the vehicle.

Does Tow Haul Mode Increase Towing Capacity?

No, it doesn’t magically increase your towing capacity. It can help your drive train while towing

heavier loads but doesn’t increase the ability to tow more weight.

Does Tow Haul Mode Save Gas?

No, you won’t save any gas; it will do quite the opposite. Your truck’s engine will increase in

RPMs. When an engine’s RPMs are high, it increases fuel consumption.

However, where the feature does help is in limiting the wear and tear on your transmission.

Replacing your transmission is much more expensive than the small downgrade in gas mileage.