NHTSA Complaint #10971518 — 2007 GMC SIERRA 1500

THERE SEEMS TO BE A RELAY PROBLEM IN THE FUSE BOX UNDER THE HOOD. THE FIRST PROBLEM HAPPENED ABOUT 3 MONTHS AGO. THE TRUCK WAS PARKED. IT HAD NO POWER. IT WOULD NOT TURN OVER AND HAD NO INSTRUMENT PANEL. CHECKED FUSE BANK AND SWAPPED RELAYS AROUND FOR THE START RELAY. AFTER SWAPPING AROUND A COUPLE OF TIMES, IT CRANKED. IT RAN OK FOR THREE MONTHS. NEXT PROBLEM OCCURRED WITH MY WIFE DRIVING. WITH NO WARNING IT LOST POWER AND DIED. IT WOULD NOT TURN OVER. AFTER TRIAL AND ERROR, I SWAPPED AROUND RELAYS FOR THE CRANK & RUN RELAY. IT STARTED. NOTE, I DID NOT REPLACE ANY RELAYS. I JUST SWAPPED THE OUT WITH OTHER RELAYS. WHEN SWAPPING RELAYS, THE OTHER FUNCTIONS WORKED AS WELL. THIS SECOND TIME WAS VERY DANGEROUS AS MY WIFE WAS DRIVING DOWN THE ROAD AND IT JUST DIED. I HAVE NO IDEA WHAT TO DO ABOUT IT WITH IT WORKING FINE FOR THE MOMENT.