Hi I have a problem with my opel omega 2.4i automatic gear.usually when i start the engine at morning and drive it all gears are ok without any problem but after hours driving it there is a problem happen in my gears when it needs to change from 2nd gear to 3rd it will have like it is N gear it means nothing is changing and how ever i push the pedal benze the car doesn't move its exactly like Gear (N) also if i put 3rd gear manualy it will be 2nd gear and however i increase it doesn't change to 3rd soo plz can anyone tell me the problem wht it can be???? soo plz help