I have an 02 escalade ext im hering a humming with a vibration in the left front

no it stays the same. i did think about that and lifted the truck up and lift up on the front wheel and had no movement

90% of the wheel bearings i repair have no play in them. I have these wire less sensors i tie to different parts of the suspension to locate sounds. I carry a special box/controller to switch to each sensor 1 to 4. Depending where i put the sensors,there numbered and when i find the numbered sensor that is loudest,i put the vehicle on lift and do further diagnoses. ----------------- Another thing is feel the tire tread with your hand to see if the tire has no lumps/bumps in it.If you feel lumps and it's not smooth,try another tire that is smooth to see if sound goes away.

ok i will check tires next. also i did check drive shaft that goes to the front. is there a reson why i have play in that shaft in nutral. it seams to turn more than it should could that have something to do with the problem.