My vectra had a water contamination for a very short time, and it has damaged the box, but not badly. It still operates normally except for between 2nd and 3rd, which is a little rougher, but not really bad at all. Occasionally this makes the box jump into limp mode. My question is:
Can the sensors that cause the box to select limp mode be adjusted to be less sensitive? Or switch off limp mode from a gearbox issue completely? I do not believe the box needs a rebuild.