2012 GMC TERRAIN Vehicle Speed Control Problems

First off before I got the car it had gone through a tune up. About a couple months after I got the car little things started to happen it would rock back and forth while idling I thought it was kind of an indicator that it needed oil but the percentage was still at a decent range and telling me it didn't need oil plus I hadent driven it 3000-5000 miles. Then engine light came on had it inspected codes ran came back telling me something about Throttle body So I purchased a whole new throttle body in Prosser at dealership costing me some booko buks and swapped it out when I got back home I then took it for test drive along with my 4 kids in the vehicle with me and then a little ways about 20 mins driving engine power reduced light came on along with stabilitrak...

I still have more to add to my other complaint. The fire started with alternator apparently there were crossed wires took alternator back to Orielys where I got it warrented out fixed the expanded wiring and replaced a hose and other things damaged by the little fire. Then after that things kept getting worse. Then it was spark plugs that were rusted that I replaced eventually I complained back to the dealership I got the car from and they agreed to help repair it after a posting by me on fb that I wasent a happy customer basically and that I literally had a sitting duck. Turns out the timing chain needed to be replaced and other little things. I've replaced O2 sensors camshaft sensors gaskets in catalytic converter had it inspected thinking it was a clogged exhaust the excessive oil usage was insane I would be going through 5quarts...

Once again, timing chain incident, this time while driving, wasn't expecting it, suddenly my Terrain steering when became stiff to turn, and happened to realize the car motor had shut off and rolling to the right, nearly hitting parked car. I tried to start vehicle, but made a whining sound, but did not start, yet check engine light was on. I had my OBD reader handy, and got p0011, p0017 codes, which tell me it was the timing chain again in this car. This very dangerous because we could of collided with a parked vehicle, if not for me struggling so hard to steer vehicle while steering wheel was stiff.

VEHICLE BEGAN TO USE EXCESSIVE AMOUNT OF OIL AND IDEL UP AND DOWN AND SOMETIMES EVEN SHUTS DOWN. AFTER ABOUT 3 MONTHS WHILE DRIVING ON THE INTERSTATE IT BEGAN TO SHUT DOWN WHILE IN MOTION. I CALLED FOR SOMEONE TO CHECK THE VEHICLE OUT AND HE ARRIVED CALLED SOMEONE TO CHECK THE VEHICLE AND HE ACTUALLY TOLD ME IT SEEMS TO BE THE MOTOR GONE BAD BUT HE ASKED WOULD I DRIVE IT BACK HOME IF HE FOLLOWED BEHIND. IT LITERALLY SCARED ME AND MY 4 CHILDREN TO DEATH WHEN IT SHUT DOWN WHILE IN MOTION WITH THAT KIND OF SPEED SO I DON'T TRUST PUTTING MY CHILDREN IN IT NOW. I DON'T THINK ITS SAFE AT ALL. THE VEHICLE I ONCE THOUGHT WAS PERFECT FOR MY FAMILY IS TURNING OUT TO BE A NIGHTMARE.

MY TERRAIN IS STALLING REALLY BAD SOME DAYS AND SOMETIMES NO PROBLEMS AT ALL. IT DOES IT MORE WHEN GOING INTO REVERSE, I HAVE TO KEEP GIVING GAS TO GET BACKED UP. IT HAS ALSO DIED ON ME WHEN I SLOW TO A STOP LIKE AT A LIGHT. THIS IS REALLY FRUSTRATING!!

SEVERAL TIMES IN 3 YEARS, THE DEALERSHIP CAN NOT DUPLICATE THE PROBLEM LOSS OF POWER STARTS RUNNING SLOW, WONT GO OVER 20 MPH, CHECK STABILITY LIGHT COMES ON, CHECK ENGINE LIGHT STARTS BLINKING, ACTS LIKE MISFIRE OR NO FUEL IN VEHICLE, STARTS ANYWHERE AT ANY TIME, VERY UNSAFE AND SCARY. AT LEAST TAKEN TO A CERTIFIED DEALERSHIP 7 OR 8 TIMES AND EVERY TIME THEY DO SOMETHING DIFFERANT , YET THE PROBLEM PERSISTS! THE VEHICLE CAN BE STATIONARY AT RED LIGHT AND BIG OR WHILE DRIVING GOING 45 OR 65 AND DROP TO 20 MPH AND NOT WANT TO GO, I PUSH THE GAS PADDLE TO FLOOR AND IT DOES NOTHING. THIS HAS BEEN INTERMEDIATE AND A PROBLEM SINCE MONTH 3 OF BUYING MY VEHICLE. THIS IS NOT SAFE AND THE DEALERSHIP HAS BASICALLY GIVIN UP ON ME AND MY VEHICLE.

SUDDEN UNINTENDED ACCELERATION WHEN VEHICLE SHIFTED FROM PARK TO DRIVE, RESULTED IN EXTREME HIGH SPEED ACCELERATION AND NO CONTROL OF VEHICLE. THIS RESULTED IN A HIGH IMPACT CRASH INTO GARAGE SIDE WALL. ALSO AIR BAG DID NOT DEPLOY. ASSUME THROTTLE WIDE OPEN CAUSING SUDDEN ACCELERATION. INSURANCE REPORT , AND POLICE REPORT PENDING

SUMMARY: I HAD TO DECIDE TO BRAKE OR SHOOT THROUGH A YELLOW LIGHT, GOING ABOUT 35 MPH, I BRAKED! 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 TAKING THE BACK STREETS TO MY DESTINATION. AT DESTINATION SHUT VEHICLE OFF TO SEE IF THIS WOULD RESET SOMETHING, IT DID! IT WAS SUPER SCARY. SO NOW TERRIFIED TO BRAKE HARD.

TL* THE CONTACT OWNS A 2012 GMC TERRAIN. UPON STARTING AND DRIVING THE VEHICLE, THE SPEEDOMETER FAILED TO FUNCTION. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 73,115. THE VIN WAS NOT AVAILABLE.

ON 8/2/12 I PURCHASED MY GMC TERRAIN BRAND NEW IN ASHLAND CITY, TN. I MOVED TO WEST PALM BEACH IN OCTOBER 2012. THE CURRENT MILES ON THE VEHICLE ARE 44,039. I GOT AN OIL CHANGE, FILTER AND MULTI-POINT INSPECTION ON 10/24/13 BY THE LOCAL GMC DEALER. ON 10/23/13 I TOOK MY VEHICLE IN TO HAVE A RECALL REPAIRED AT SCHUMACHER BUICK/GMC. THE RECALL # IS 12312. A MONTH LATER THE VEHICLE WOULD LUNGE SHARPLY FORWARD WHILE DRIVING AND A HEAVY SHAKING VIBRATION (BOTH WHILE DRIVING AND AT A STOP) BELOW MY FEET IN THE VEHICLE (FLOOR BOARD). I TOOK THE VEHICLE TO SCHUMACHER BUICK/GMC 3031 OKEECHOBEE BLVD, ON 11/11/13 AND IT REMAINED UNTIL 11/15/14 AND THE PROBLEM WAS NOT IDENTIFIED. I RETURNED THE VEHICLE FOR THE SAME PROBLEM ON 12/21/13 (SAME DEALER) AND IT WAS PICKED UP ON 12/31/13. THE FIRST SERVICE ADVISOR WAS ROB DEAL HE TOLD ME THAT...

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...