your abs module doesn't have dexcool, it's the computer attatched to your brake master cylinder. if you don't have 60 ohms then you have a problem on a communication line. problem is, it could be any communication line. SI is supposed to work at my house, but it's not letting me log in. basically, you'd be looking for a short to voltage... somewhere in the car. i THINK that the turn signals are module controlled in the newer cars, so that code is probably related to the U code