A timing belt on a 2004 Vectra GSI 3.2 should be changed at about 50,000 miles. The timing belts can be purchased at any auto parts store.
cam belt
belt driven
Usually the cam belt should be changed every 60,000 miles
55000 miles max
they have a chain mate
It's a cambelt.
When to change out a timing belt on 06 vectra sri Mileage wise
One may buy a Vectra GSI by using the websites Gum Tree or Preloved. Both sites are free to use and there are often used models available for purchase.
I believe all vauxhalls are recommended for a belt change at 40,000 miles.
timing chain it,s the same engine as my wifes corsa auto
Every 40k miles, buy a kit which contains the belt and the pullies, as its the pully bearings that collapse.