how to change a abs brake pump on a vauxhall vectra?

As I know it to be the abs module. It has about 6 brake pipes going into it, in the engine bay. You should see how this comes apart. Either buy a Haynes Manual or ask your mechanic friend to help you out on the bits you get stuck on. Sorry I can't be more helpfull.
Kind Regards

Tristan Hanwell
August 2006