I have been having problems with the computer light on. When checked with a diagnostic tool it reads - Crankshaft position. Camshaft Position. Correation Bank. Sensor B. I took it into my local Arnold Clark and they said that the Timing Chain had jumped and needs to be reset. They did this on August 10th at a cost of £340. The Computer light has come on again and now they are saying it needs a new Timing Chain. I pointed out that the car is only 4 years old and that the timing chain should last longer than that. They agreed. They asked Vauxhall to pay for the work but they refused and they said they would pay 30% and I would have to pay 70%. The cost now is going to be £345.62 because I have refused to pay the Fitting charge. Has anybody else had this problem. I wondered whether it should be on a Recall. They all say not.