Question

you are starting an automatic transmission vehicle on an uphill grade. if you use the parking brake, yourelease the parking brake after you feel the engine start to pull.release the foot brake before releasing the parking brake.keep the parking brake set until you obtain a speed of at least 5 mph.accelerate with your left foot.

Explanation:

When starting an automatic transmission vehicle uphill with the parking brake engaged, you need to wait until the engine has enough power to pull the vehicle forward (preventing rolling backward) before releasing the parking brake. Releasing the foot brake first would cause rolling, keeping the parking brake on too long is unnecessary, and accelerating with the left foot is not standard practice.

Answer:

release the parking brake after you feel the engine start to pull.