looking for any advice on my situation.ive got a vectra sri 2.2 150 with only 35000 miles on clock and full service history.this morning car wouldnt start got AA out and he said cam chain had broken.so ive took it to my local dealer and could be facing a bill of £iooo + but ive looked on forums and this seems a common fault.If its a common fault shouldnt vauxhall be footing some of the bill.Does anybody know if the is any warning signs to tell you this is about to happen. russ