I have a problem with my 2002 Omega 2.6 V6 auto. If I start on an incline –up or down- while turning i.e. stationary at traffic lights on a hill wanting to turn left. The car starts off ok and changes gear into third and there it stays, it will not change up the box. The only way to clear the fault is to stop and move off again and the gearbox works ok going through the gears. If I press the TC button before the box changes into third it immediately moves into third and then second, I can then deselect TC and the box works fine until the next inclined start.
I have taken it to the main dealer and they cannot find the problem a local Vauxhall specialist has suggested it may be problem traction control but offers no idea of how to fix it. Has anyone any ideas of what the problem is and how to fix it? I have head that it could be a software level problem but I really don't know. Any help would be welcome.