My friend has a facelift 2.2 Vectra C. They came to me yesterday and said they can't get it started. They have had a few checks on it and it's showing up as a crank fault. They said they have changed a few sensors but with no luck. I am not sure if they have had the crank sensor changed yet. The car just wont fire up. Whats common to go wrong on this car so I can give them some advice on what to try. Cheers