My car is a 1994 buick park avenue fully loaded with 155000 kilometres. I had electrical problems caused by corrosion in the main positif battery cable wich was repaired. Since then, the " traction control off" display in always " on". The ABS system works fine, but no traction control. Before the short on the battery cable, everything worked A1. Could you direct me as too what might have shorted?I checked all the fuses, all good.