Wheel bearing? Worn Brake pads?
More then likey it is either the left are right front wheel bearing that is bad.
If it is like a whirring whine that is probably a normal 4X4 noise. Any other noise I'd be looking into as a problem.
it is the blend door in the duct system
Replace door moulding
could be the water pump. maybe radiator
the noise could be coming from either a bad wheel bearing or something wrong in front axle.
i was told by a Chevy serviceman that the ticking noise was coming from the fuel injectors firing.but to me it sounded more like lifters tapping or floating.
Front hubs my be wearing out.
Mine had a clicking noise and it turned out to be the front passanger side axle assembly.
the blend door actuater is more than likely the cause of the noise.....very common....can go in behind the glove box to replace it.
That is the electric fuel pump that's inside of the fuel tank. That is a common problem with the Chevy trucks. A dirty fuel filter will cause the pump to make that noise or the fuel pump is wearing out.
Wheel bearing