If the VCU hasnt been changed , then replace with genuine GKN unit , as good insurance against IRD and Diff damage . Manual or auto ? Autos will go for very long mileages, occasionally a solenoid might go in box , if it does some don't imobilise you , but don't keep driving as further damage can be done quickly . Not a hard fix , and not that expensive.
ah another dumfrieshian
can i just say that i hope the letter G doesnt go wrong on someones keyboard when they message you