Hill Start Assist (HSA)

This vehicle has an HSA feature, which may be useful when the vehicle is stopped on a grade.

This feature is designed to prevent the vehicle from rolling, either forward or rearward, during vehicle drive off.

After you completely stop and hold the vehicle in a complete standstill on a grade, HSA will automatically activate.

During the transition period between when you release the brake pedal and start to accelerate to drive off on a grade, HSA holds the braking pressure for a maximum of two seconds to ensure that there is no rolling. The brakes will automatically release when the accelerator pedal is applied within the two-second window.

If the vehicle is equipped with the Integrated Trailer Brake Control (ITBC) system, HSA may also apply the trailer brakes.

It will not activate if the vehicle is in a drive gear and facing downhill or if the vehicle is facing uphill and in R (Reverse).

There may be situations on minor hills (less than 5% grade) with a loaded vehicle or while pulling a trailer where HSA may activate.

If you release the brake pedal and then reapply the brake pedal while HSA is activated, the brake pedal typically feels firmer with less pedal travel.

 

Reckon it was just an anomaly, since I was not loaded or towing.

 

I would suspect that the tilt sensor is off. I know there is one as it affects the seat belts which will stay locked when the truck is slanted up or down a hill.