NHTSA Complaint #11377431 — 2014 CHEVROLET MALIBU

THIS HAS HAPPENED TWICE NOW, ONCE FOR MY WIFE AND THE SECOND TIME I WAS DRIVING. BOTH INCIDENTS HAPPENED WHILE IN MOTION ON THE HIGHWAY AND THE VEHICLE DISPLAY SHOWED REDUCED ENGINE POWER AND THE VEHICLE DE-RATED AND SLOWED AUTOMATICALLY ON THE HIGHWAY. THE CHECK ENGINE LIGHT DISPLAYED AND AFTER CONNECTING A CODE READER TO THE OBD AND CODE P2138 WAS LOGGED WHICH IS POTENTIALLY A FAULTY THROTTLE POSITION SENSOR/ FOOT GAS PEDAL. I REPLACED THE THROTTLE POSITION SENSOR CLEARED THE STORED CODE AND A COUPLE WEEKS LATER THE VEHICLE AGAIN WENT INTO LIMP MODE AND DE-RATED ON HIGHWAY. THE CHECK ENGINE LIGHT CAME ON AND THE SAME CODE P2138 WAS LOGGED INDICATING VOLTAGE DIFFERENCE BETWEEN APP SENSOR 1 AND APP SENSOR 2 OF THE THROTTLE POSITIONING SENSOR. AFTER FURTHER RESEARCH ON LINE I FOUND THAT A GM SERVICE BULLETIN WAS ISSUED FOR POTENTIAL MOISTURE INTRUSION OF THE CONNECTORS FROM THE THROTTLE POSITION SENSOR TO THE ECM. (SEE ATTACHED) IT SEEMS LIKE MY VEHICLE IS EXPERIENCING MOISTURE IN THE CONNECTORS AS BOTH INCIDENTS HAPPENED WITHIN MINUTES OF TAKING THE VEHICLE THROUGH AN AUTOMATIC CAR WASH. IN MY OPINION THIS IS A SAFETY CONCERN FOR THIS MODEL VEHICLE TO DE-RATE AND SLOW DOWN SUDDENLY AT HIGHWAY SPEEDS WITH CARS FOLLOWING BEHIND AND HAS BEEN A KNOWN ISSUE BY GM AND SHOULD HAVE A RECALL ISSUED.