Hi, had an intermittent defect in the park pilot and now it does not work at all. When it's activated it makes a long beep and the yellow P> sing lights up in the dash. So I bought a cheap OP-COM off e-bay and it told me that the rear outer right sensor was defect. I changed it with the rear outer left one (I changed them in between) and the defect moved to the left, so I'm pretty shure it's a faulty sensor. The problem is the dealer here in Romania is asking for 81 Euro (72,5 pounds) for it and that's waaaay to much in my opinion. I've looked on the internet but can't seem to find one anywhere so I thought maybe one of you knows where I can find a cheaper one? GM P/N is 12787793 or BOSH P/N: 0 263 003 208