1996 Buick Century has a humming noise while driving at normal speeds and curving or turning slightly to the left only. It will not do this while turning left from a stop or slow turn, but only at moderate or hi-way speeds. You can make the sound while changing lanes, passing or curving to the left. This is only noticeable on actions involving left turn or merging motions.
These are the symptoms of a worn wheel bearing, right side. The noise seems to coming from the rear, right? You can still drive the car but eventually you will need to replace the wheel bearing. Not all that expensive.
You Don’t Say How Long It’s Been Doing This.
It Won’t Get Any Better, Only Worse, And Can Become More Costly Or Dangerous If Repairs Are Delayed. Get It Taken Care Of, Now.
CSA