THE FUSE RELAY BLOCK ON MY 2011 CHEVROLET SILVERADO 1500 WITH ONLY 56,000 MILES NEARLY CAUGHT FIRE WHEN THE REAR WINDOW DEFROSTER AND HEATED MIRRORS WOULD NOT TURN OFF EVEN WITH THE KEY REMOVED. THE PROBLEM WAS TRACED TO A BAD GROUND ON CIRCUIT G200, THIS IS PART OF THE SWITCH CIRCUIT THAT CONTROLS THE MIRRORS AND DEFROSTER. GM HAS DESIGNED A CIRCUIT THAT HAS THE ABILITY TO TURN ITSELF ON EVEN WHEN THE CAR IS OFF AND THE KEY REMOVED! BUT EVEN WORSE GM REFUSES TO PAY FOR THE PARTS OR LABOR TO REPAIR MY TRUCK. I HAVE MADE SEVERAL CALLS TO GM CUSTOMER SERVICE AND WHILE INITIALLY ENCOURAGING GM HAS REFUSED TO STAND BEHIND THEIR PRODUCT. HOWARD THE CUSTOMER SERVICE REPRESENTATIVE AT GM COULDN'T DISCLOSE TO ME THE AMOUNT OF FINANCIAL HELP THEY OFFERED THE DEALERSHIP, IT TURNS OUT THEY DIDN'T OFFER ANY HELP AT ALL. I'M NOT SURE I WILL BUY ANOTHER GM PRODUCT AFTER THIS EXPERIENCE.