Chasing yet another rear end noise, looking for input
I have a WJ/WG 2003 Grand Cherokee Overland...WG is the model here in Australia.
I have had the same problem on the right side rear....it drove me crazy. I replaced the rear disc pads checked the handbrake shoes and had the hand brake re-adjusted and it still did the grinding noise, one thing I have done that has not been mentioned on these posts is to get the rear discs machined, this seems to have stopped the noise on my GC.
I think there is more end float on the right side axle and as the brake pads wear down, so does the disc, a raised bead towards the inside centre of the disc forms and the disc touches the backing plate, since the machining the noise has disappeared.
At least that is my theory on the problem, try getting the discs machined or replace them with new discs.