I have a 98 blazer 4x4 regular street tires on it and I have a bad humming noise in the front left. gets worse when I go around a corner. any speed. Bad when i do 60. tires are not showing sings of wear. nothing is rubbing the tire. front diff has fluid in it. any one have any ideas on what it might be?

 

If the humming noise is in the left front and it's louder when you turn right, and quieter when you turn left, it's probably the left front wheel bearing.

 

I would guess wheel bearing as well pending confirmation of Rob's statment.

 

definitely a wheel bearing

 

U all called it it was a bearing. 137 dollars 2 hrs later it woks just like new. thank guys