* Misaligned wheels. If the wheels are not aligned properly, it can cause the truck to pull to one side when the brakes are applied.
* Brake caliper is sticking. If the brake caliper is sticking, it can cause the brake pads to drag on the rotor, which can cause the truck to pull to one side when the brakes are applied.
* Worn or damaged brake pads. If the brake pads are worn or damaged, it can cause the truck to pull to one side when the brakes are applied.
* Brake fluid leak. If there is a brake fluid leak, it can cause the brake pressure to be uneven, which can cause the truck to pull to one side when the brakes are applied.
* Loose or damaged suspension components. If any of the suspension components are loose or damaged, it can cause the truck to pull to one side when the brakes are applied.
It is important to have the truck inspected by a qualified mechanic to determine the exact cause of the problem and to have it repaired.
