2011 GMC TERRAIN. CONSUMER WRITES IN REGARDS TO VEHICLE'S PERFORMANCE AND REQUEST ASSISTANCE WITH REPAIR *TGW THE CONSUMER AT ABOUT 6,000 MILES, THE VEHICLE STARTED JERKING WHEN PICKING UP SPEED. THE JERKING WOULD USUALLY OCCUR WHILE INCREASING SPEED WHEN IT WOULD GET TO APPROXIMATELY 18-40 MPH. THE VEHICLE ALSO STALLED TWICE; ONCE WHEN BACKING OUT OF A PARKING SPACE, AND THE SECOND TIME WHEN MOVING FORWARD FROM A PARKING SPACE. WHEN DRIVING THE CAR FOR THE FIRST 2,000 MILES, THE CONSUMER STATED SHE DROVE THE VEHICLE IN STANDARD MODE. THEREAFTER, SHE DROVE IN ECONOMY MODE. WHEN THE VEHICLE STARTED JERKING AND HESITATING, SHE STOPPED DRIVING IN ECONOMY MODE. WHEN THE CONSUMER ARRIVED AT THE DEALER, SHE WAS INFORMED A RECALL WAS ISSUED 6-8 WEEKS PRIOR. HOWEVER, THE CONSUMER NEVER RECEIVED A NOTICE. THE RECALL WAS PERFORMED AND THE DEALER STATED THE PROBLEM SHE WAS EXPERIENCING WAS AN EXTENSION OF THE RECALL ISSUE. THE VEHICLE DID NOT STALL ANYMORE AFTER THE RECALL ISSUE WAS FIXED. HOWEVER, THE JERKING DID CONTINUE. THE CONSUMER RETURNED TO THE DEALER, BUT THEY INSISTED THERE WAS NOTHING WRONG WITH THE VEHICLE, AS IT WAS A NORMAL CHARACTERISTIC. THE CONSUMER WENT TO THE DEALERSHIP WHERE THE VEHICLE WAS LEASED TO HAVE THEM INSPECT IT. THEY STATED THE SHIFT ADAPTIVE LEARNS NEEDED TO BE REST. THE CONSUMER STATED AFTER LEAVING THE DEALERSHIP AND DRIVING SEVERAL BLOCKS, THE JERKING RETURNED. *JB
2012
FUEL/PROPULSION SYSTEM
I STARTED OUT DRIVING ON HIGHWAY ROAD AT APPROXIMATELY 5:45PM TRAFFIC WAS MODERATE, MY SPEED WAS ABOUT 30-35 MPH. ALL OF A SUDDEN I HEARD A CLUNK AND THEN ALARM DING FROM THE DASH AS WELL AS MESSAGE "SERVICE STABILTRAK" THEN "REDUCED ENGINE POWER". I WAS UNABLE TO GO ANY FASTER THAN 25MPH. I DROVE IN THIS MODE FOR ABOUT 2 MILES IN TRAFFIC, WHEN REACHING OPEN HIGHWAY (NO TRAFFIC) THE VEHICLE WOULD NOT SHIFT BY ITSELF. I HAD TO ACCELERATE THEN LET OFF THE GAS, TAP PEDAL THEN THE VEHICLE WOULD SHIFT. I WAS ABLE TO DO THIS MULTIPLE TIMES UNTIL REACHING ABOUT 45MPH. I PULLED OFF INTO A NEIGHBORHOOD, SHUT VEHICLE OFF TO SEE IF THIS WOULD RESET SOMETHING, IT DID NOT. THE VEHICLE WAS IN THIS STATE WHEN I ARRIVED AT THE DEALERSHIP SERVICE DEPARTMENT AT APPROXIMATELY 6:05PM. DEALERSHIP LOGGED FOLLOWING ON SERVICE REQUEST: 5043 FOUND CODE P228C RAN DIAG COULD NOT DUPLICATE PROBLEM FUEL PSI AT SPEC RAISES TO SPEC TEST DROVE ON HIGHWAY DID NOT DUPLICATE CONDITION FOUND NO BULL ON CONDITION TEST DRIVE NUMEROUS TIME, COULD NOT DUPLICATE CONCERN. MILES OUT 5067. *TR