I have a 2006 Vectra CDTI 150 auto and I love it to bits however the autobox is playing up and I was hoping for some advice. Have looked at several other threads with similar problems but cant find any definitive fix.
The box works fine when the engine is cold but once everything it fully warmed up after say 20 miles or half and hour is when the fun begins! Fist and second work lovely but as the box changes up into third it seems to slip into neutral first and then go into third with a bang. The rest of the changes all happen nicely its is just the change from second to third that the gearbox seems to completely stuff up! There are no warning lights or any indication of a problem, I have not been able to find any trouble codes.
I am thinking it may be a transmission fluid issue and plan to change it asap. Any advice would be most welcome!