Hi, I eventually got my car sorted. The ABS unit was beyond repair and so I bought one from a breakers. I was told to quote the code from the unit, which was AD9 and to get one the same which I did. This was fitted but they evidently had a job to match ( ? ) it to the car. The garage did get it to work after a lot of phoning around and so I am back on the road. The alternative would have been to scrap it I guess. Can I include the garage that did the work? They were very helpful and reasonable in price considering. They are Auto Cars, Willerby, near Hull.
Since I got the car back, I have fitted a piece of stiff plastic under the expansion tank, just in case. Maybe other Vauxhall owners would be advised to check their tanks for leaks also.
Regards to all, Alphonse.