NHTSA Complaint #11362690 — 2013 CHEVROLET SUBURBAN

TAPPING OR CLICKING NOISE COMING FROM ENGINE COMPARTMENT. CAR LOST POWER, BUCKING WITH HARD SHIFTS, AND STABILITRACK, ABS AND CHECK ENGINE LIGHTS ALL COME ON. I TOOK TO AUTHORIZED REPAIR SHOP AND THEY FOUND MISFIRE ON CYL 4. CHANGED ALL SPARK PLUGS/WIRES AND CLEANED THOTTLE BODY AND TUNE UP AS WELL AS OIL CHANGE. CAR CONTINUED HARD DOWNSHIFTING AFTER PICKING UP. DROVE FOR A WEEK AND SYMPTOMS REAPPEARED AGAIN. SHOP IS CURRENTLY TRYING TO DIAGNOSE IF IT'S A BAD LIFTER(S) OR POSSIBLY FUEL INJECTION PROBLEM. SHOP OWNER ADMITTED THAT HE'S HEARD OF PROBLEMS WITH GM'S 5.3 ENGINES AND THE ACTIVE FUEL MANAGEMENT SYSTEM WRECKING ENGINES. I HAVE MY 3 KIDS IN THE CAR AND IT WAS SCARY ALMOST GETTING STUCK IN THE MIDDLE OF A BUSY STREET.