NHTSA Complaint #11329166 — 2012 CHEVROLET TRAVERSE

RECENTLY I STARTED HAVING ISSUES WITH SHUDDERING WHILE DRIVING AT CERTAIN SPEEDS. FIRST AT 40MPH AND THEN MORE RECENTLY AT HIGHER SPEEDS. ALSO TODAY THE STABILTRACK WARNING LIGHT CAME ON STATING THAT IT REQUIRED SERVICE. RPM'S AND SPEEDOMETER ALSO WOULD FLUCTUATE WHILE DRIVING. THERE ARE MANY VIDEOS ON YOUTUBE THAT POINT TO THE THROTTLE BODY HAVING OIL BLOW BY THROUGH THE THROTTLE BODY AS THERE IS NO CHECK VALVE TO KEEP THIS FROM HAPPENING. I WILL BE CLEANING THE THROTTLE BODY TO SEE IF IT FIXES THE PROBLEM. I'VE ALSO SEEN THAT THE BRAKE POSITION SENSOR COULD BE THE CULPRIT AS WELL. I REPLACED THE IGNITION COILS AFTER SEEING THE ENGINE FLUCTUATIONS, BUT DID NOT REPLACE THE SPARKS PLUGS AS THEY WERE RECENTLY REPLACED UNDER 6K MILES AGO. THIS SEEMS TO BE A LONG STANDING AND WIDE DISPERSED ISSUE WITH THIS YEAR, MAKE AND MODEL OF VEHICLE. MANY HAVE SEEN THE POWER DROP WHILE AT HIGHWAY SPEEDS AND THIS BUG COULD CAUSE THE MASS DAMAGE OF A TRANSMISSION IF THE VEHICLE WERE TO AUTOMATICALLY DOWNSHIFT WHILE AT HIGHWAY SPEEDS, ESPECIALLY IF IT WERE TO DROP TO 2ND GEAR FROM 5TH OR 6TH ON AUTOMATIC DRIVE. THIS NEEDS TO BE LOOKED INTO AND ADDRESSED APPROPRIATELY. *TR