I PARKED AT A LOCAL GAS STATION TO GO INSIDE TO PAY. I LEFT THE TRUCK RUNNING WITH IT IN PARK. AFTER I WAS INSIDE FOR APPROXIMATELY 30-45 SECONDS, THE TRUCKS GEAR SHIFT SLIPPED OUT OF PARK AND INTO REVERSE, CAUSING THE TRUCK TO RUN BACKWARDS, FINALLY STRIKING A GAS PUMP AND KNOCKING IT OVER. I WAS ABLE TO REACH THE TRUCK AND STOP IT BEFORE IT WENT ANY FURTHER. I HAD MY BUMPER REPLACED AS IT WAS DAMAGED. THERE WAS A CLAIM FOR APPROX $25,000.00 TO REPLACE THE GAS PUMP. *JB