I have a 2003 3lt GU with 125000 kms on the clock.
I have developed a noise that sounds a bit like a disc brake pad squealing / rubbing on a disc, but it is not there all of the time. I have had the rear axles removed and bearings checked and re-greased, front bearings repacked, disc pads changed.

The noise can come at any time, could be when the car is cold or hot, just driving down the road the noise will start, I slow down to about 5 - 10 kms and it stops and I can drive on. I have driven the car for 3 hours only to have it happen again. I have jacked up the car and all of the wheels turn properly with no undue noise. The noise seems to happen when driving in a straight line as well as going around a round about.

I thought that maybe my auto lockers on the front wheels were playing up, so I have fitted manual locking ones , all to no avail.

Can anyone suggest any ideas as to what it could be.