Hi, getting a Gearbox Faulty error from my 06 Hdi C8, only occurs first thing in the morning, then can be reset by switching off engine and restarting, can anyone recommend a specialist or course of action, the error is a low pressure one? One gearbox specialist I rang said they would not touch it as it was a semi automatic and didn't know anyone who would apart from a main dealer, which I would rather avoid!