NHTSA Complaint #10483795 — 2012 CHEVROLET SONIC

ISSUES BEGAN WITH AN INTERMITTENT RATTLE AT COLD START AFTER CAR HAD BEEN SITTING ABOUT 30MINS TO AN HR, FROM BEING DRIVEN. NO CODES SHOWING SO WENT UN-REPAIRED, ONCE PINPOINTED, IT WAS REPLICATED, STILL NO CODES, NO FIX, STARTING ABOUT AUG 2012 AFTER MY 1ST SERVICE CAR BEGAN TO SHAKE AT IDLE WHILE STOPPED IN D, STARTED GETTING WORSE PROGRESSIVELY. VEHICLE STALLED IN MIDDLE OF INTERSECTION WHILE TRYING TO SHIFT ITSELF (AUTO TRANS) INTO 3RD, VIOLENT JERK TO A STOP AND IMMEDIATELY PICKED ITSELF UP AND JERKED FORWARD AND MOVED, WITH MY CHILDREN IN THE CAR. NEXT STALL OCCURRED ABOUT 3-4 WEEKS LATER, IDLED SO ROUGH AND LOW WHILE IN D AT A STOP LIGHT, CAR BOGGED DOWN AND STALLED, STARTED ITSELF RIGHT BACK UP. ENGINE POWER SURGING BEGAN AT THIS POINT. WHILE BRAKING OR ON BRAKE WHILE STOPPED, ENGINE WOULD POWER SURGE THRUSTING CAR FORWARD, CAME VERY CLOSE TO HITTING SEVERAL CARS WHILE PULLING INTO PARKING SPOT FROM THESE SURGES. HAD TAKEN VEHICLE IN MULTIPLE TIMES BETWEEN 1ST OCCURRENCE AND THIS POINT IN SEPT. IT WAS DUPLICATED WITH MULTIPLE SYMPTOMS AT ONCE, INCLUDING AS GIVEN FROM DEALER: HARD SHAKING, MISFIRE, AND RATTLE/KNOCK AT COLD START. ONLY CODE TO SHOW WAS FOR THE MISFIRE, REPAIR: VALVE CLEANING, NOT FIXED. RATTLE BECAME A KNOCKING. IDLE MEANWHILE GETTING ROUGHER. TOOK BACK FOR KNOCKING, SURGING, ROUGH IDLE, STALLING. NO CODES, REPAIR: GM TECH ASSIST HAD CAMSHAFT ACTUATORS REPLACED , FIXED KNOCKING/RATTLE AT COLD START ONLY! IDLE WORSE, NOW LOSS OF ENGINE POWER INTERMITTENTLY CAUSING VEHICLE TO HARDLY MOVE, HAD VEHICLE BACK LESS THAN 24HRS. ALMOST HAD A "T-BONE" ACCIDENT AND HEAD ON INTO A POLE IN SAME INCIDENT DUE TO SAID LOSS OF POWER. ASKED FOR REPLACEMENT (AFTER 7 SERVICE REPAIR ATTEMPTS), REQUEST PRESENTLY IN LIMBO, NO OFFER OF REPLACEMENT THUS FAR! I AM SEVERELY CONCERNED FOR MY FAMILY'S SAFETY AT THIS POINT, CLEARLY DEFECTIVE IN ITSELF WITH NO CODES SHOWING. *TR