Buick enclave boat wobbles after hitting bump and won't stop unless slow down,speed up or turn out of it.. happens at about 80 km hr... everything looks new underneath, sway bars, springs, shocks.... the mechanic did do front end work for the steering. Can anyone help me? It's on a 30 day warranty. Just purchased.

SOURCE: Power Steering pump replacement

if you have power stering oil in it its normal for the pump to be noisy its air that make that noise continue to drive air will come out by itself after a few kilometer it will go away if you have enough oil thanks pierre

SOURCE: Thump noise in front end

Have your CV joints inspect.

SOURCE: Hi, I have a 2001 Buick. We just replaced the

Let me see know at 45 miles per hour a vehicle usually shifts gears into the highest gear so could it be the torque converter hanging up and not shifting quick enough or maybe its the U joints. Have the transmission fluid checked for proper level and color.
Here's a small test for you when your accelerating up to 55 miles per hour try letting off the pedal at 44 miles per hour and then reaccelerating up to the 55 mph and tell me if it`s smoother if it is then chances are that it`s hang up on third gear. There's also a electric sensor located on transmission that assist shifting it`s usually controlled by the engine timing.
One more thing did the repair man check to see if the tires where directional tires if there not put on right it could cause vibration and early wear out .Hope i helped you.

Testimonial: "This must be the solution. It did as you stated. I am surprised my mechanic did not think of this."

SOURCE: HOW DO YOU CHANGE FRONT RIGHT HEADLIGHT ON A 2009 BUICK ENCLAVE

you must remove front bumper cover

SOURCE: how do you replace the front sway bar on a 98

The sway bar has quite a bit of tension. You may want to consult a shop repair manual before attempting the repair. Please make sure to follow all the safety precautions. Auto Zone has some online repair manuals for free.