I would probably check the battery and connections first, if that isn't it then I would check all of the motor connections, and if that is still not it then I would take it to a repair shop. Hope this info helps
If a car shakes and loses power when idling it can be the spark plug. If a spark plug is fouling, it can cause power losses.
A power loss can be from a dead or almost-dead battery. If the car loses power on a hill, it might be a fuel injector or fuel pump, if I'm not mistaken.
Try changing the fuel filter.
gravity
Same as any car with power steering. You can continue to steer the car but with increased effort.
what year is your car and engine cylinders
It loses power because going uphill is harder then going downhill therefore causing it to use more gas and then making it lose power bit by bit.
When your truck loses power, the ABS system loses power.
Have vehicle scanned to determine the problem
Sounds like it is in need of a complete tune up.
Since cars are very careless, they keep losing things such as power. And once lost, these things are very difficult to find!
Far too vague for diagnoses. Far too many possibilities.