The GMC Sierra is built with capability at its core, and for drivers tackling towing and hauling duties, Tow/Haul mode can be a critical onboard feature.

Are you using your car to its full capacity? Maybe not, if you've never used tow/haul mode. Here's what it is and how to use it so you don't break your car.

Tow/haul mode is a very useful feature if your car or truck has it. And if it does, you should definitely take advantage of it, and here's why you should.