Check fluid level, are there any noises, what are the conditions when problem occurs?
perhaps your power steering pump needing repair
check your power steering fluid...may be low
It is very hard to turn the steering wheel and/or a whining or squealing noise when you turn the steering wheel.
The Buick LeSabre doesn't have horns or antlers. Search hard and you'll never find 'em.
Have you checked to make sure the belt is still on the PS pump pulley?
There is a small black thing under the steering wheel more to the right side of it and what you do is you pull the outside of the thing out and while doing that press the inner part IN. its hard but you get used to it :) laurisxy@gmail.com
car stalls backfires hard to start
check the power steering fluid level and the power steering belt
You either need power streering fluid or a power steering belt.
It wouldn't affect the pump and it can cause hard steering one way or other, or it can leak.
Power steering pump failing.
Power steering belt slipping? Power steering pump bad? Steering rack worn? Suspension parts worn?