BRAKES FAILED ON MY NEW 2004 JEEP GRAND CHEROKEE WHEN GOING TO PARK HIT A POLE. PUMPED THEM UP AND TOOK TO DEALER. DEALER COULDN'T FIND ANYTHING WRONG. WITHIN NEXT WEEK AT SLOW SPEEDS BRAKES FAILED 3 MORE TIMES CALLED AWRECKER AND TRADED IT IN AFTER DEALER STILL COULDN'T FIND THE PROBLEM AFTER KEEPING IT 5 DAYS. *AK