au 1 xr6 vct diff clunking
hi all i know it has probably been discussed be4. my uncle has an au 1 xr6 that has a clunking diff. i have heard they have a bit of a problem. so far the dealer has replaced the oil(didnt work), replaced the centre (didnt work) he is know pulling his hair out (didnt have much to start with). i know at work we have had probs with the diffs on commo`s clunking. we add a bottle of gm diff additive the go and do 20 or so figure 8`s down the back. seems to work. any one know of a fix???