I got a genuine sender from a holden dealer in town, the guy knew nothing about a special sender for the Vs.. cost me $13 plus gst = $14.30.. made no difference at all.....
So I have worked out a way to override the fan control from the computer, now i can turn the fan on when I want it !!! not when the bloody computer thinks its time... I have taken the VS to Newcastle to pick up a caravan, went fine on the way up, I turned the fan on as needed. With the 'van on on the way back, I kept the fan on all the way, was ok except for the hills on Newcastle express way, and near Mittagong. Needs new radiator I think , got a quote from a cooling place here in town - $150... will do that soon. I have to go all the way to Queensland in a couple of weeks to pick up another caravan, it will have to be right by then