2008 GMC Acadia Speed Control & Cruise Problems

The traction control turns on and then the shifts don’t work and I can’t drive since there is no speed also the rpm and the gas the speed and the battery gages start flickering up and down then I turn off the truck and it continues to work fine but after 40 miles or so it does it all again

ON 4 SEPARATE OCCASIONS WITHIN A 3 WEEK PERIOD THE VEHICLE WOULD ACCELERATE WHILE DRIVING WITHOUT DRIVER PROMPTS OR CONTROL (RPMS REVVED FROM 2000 TO OVER 6000 AND SPEED WOULD INCREASE FROM 50 MPH TO OVER 85 MPH WITH ACCELERATOR PEGGED TO THE FLOOR.) THE ONLY WAY TO CORRECT THIS WAS TO PUT THE VEHICLE IN NEUTRAL, COAST TO THE SIDE OF THE ROAD, STOP THE VEHICLE AND TURN OFF THE ENGINE FOR 10-15 MINUTES, THEN RESTART IT AND IT WOULD RUN NORMALLY FOR SHORT PERIODS OF TIME. IF I DROVE THE VEHICLE FOR MORE THAN 30 MINUTES AT A TIME IT WOULD REACT THIS WAY EVERY TIME AND NEARLY CAUSED ME TO HIT 2 VEHICLES ON THE INTERSTATE. ON ONE OCCASION I HAD TO IMPACT A GUARDRAIL TO SLOW THE VEHICLE DOWN. I TOOK THE VEHICLE TO A CERTIFIED GMC DEALERSHIP WHO STATED ON BOTH OCCASIONS THEY COULD NOT REPEAT THE PROBLEM AFTER DRIVING IT FOR 5-10 MINUTES OR LESS THAN 15 MILES. WHEN I INFORMED THEM THAT IT ONLY OCCURRED AFTER 30-45 MINUTES OF DRIVING, THE TECHNICIAN STATED HE DIDN'T HAVE TIME TO DRIVE THE VEHICLE THAT LENGTH OF TIME OR DISTANCE AND WENT ON TO SAY NO DIAGNOSTIC CODES WERE TRIPPED SO THERE WASN'T ANY REPAIRS HE COULD DO OR THAT GMC WOULD AUTHORIZED. THE VEHICLE WAS UNDER WARRANTY. I RESEARCHED THIS PROBLEM ONLINE AT WWW.CARCOMPLAINTS.COM AND FOUND OVER 25 SIMILAR ISSUES AND COMPLAINTS FROM OTHER OWNERS OF THE SAME YEAR MAKE AND MODEL. TWO OF WHICH RESULTED IN A CRASH WITH SERIOUS INJURIES TO THE OCCUPANTS. I WAS FORCED TO SELL THIS VEHICLE AT A 2554.00 LOSS AND WILL NOW BE FILING A CLASS ACTION LAWSUIT AGAINST GMC AND THE SERVICE DEALERSHIP I DEALT WITH AFTER I COMPILE THE REQUIRED EVIDENCE FROM THE OTHER 25 OWNERS WITH THE SAME PROBLEMS. I FIND IT HARD TO BELIEVE THAT YOU WOULD ALLOW THIS TO CONTINUE KNOWING FULL WELL INJURIES HAD BEEN REPORTED TO NHTSA IN PREVIOUS COMPLAINTS. I MAY INCLUDE NHTSA IN MY CLASS ACTION LAWSUIT IF MY ATTORNEYS THINK IT TO BE A GOOD IDEA.

WHEN TRAVELLING HOME ON THE HIGHWAY AFTER SCHOOL SHOPPING WITH MY TWO CHILDREN MY VEHICLE SUDDENLY REDUCED POWER, BECAME UNCONTROLLABLE AND WOULDN'T ALLOW ME TO GET OUT OF THE WAY OF THE RAPIDLY APPROACHING VEHICLES BEHIND ME IN TIME. I WAS ABLE TO GET TO THE SHOULDER, AFTER THE REDUCED ENGINE ALERT APPEARED. STABILTRAK WAS ALSO DISABLED AND ONE MORE FEATURE I CANNOT REMEMBER. I HAD TO SHUT MY VEHICLE DOWN AND SIT WITH TWO CHILDREN IN THE CAR WAITING FOR THE CAR TO SOMEHOW RIGHT ITSELF. AFTER 10 MINUTES I TRIED TURNING IT ON AND THE ERRORS WERE GONE AND THE CAR DROVE AGAIN, EXCEPT ROUGH. I TOOK IT TO THE LOCAL AUTO STORE AND THE DIAGNOSED IT WITH THE CODE READER AS TAC. THROTTLE BODY. THE PERSON AT THE COUNTER SAID THEY SEE THIS ALL THE TIME WITH THIS VEHICLE. IN FACT, IT SHOULD BE A RECALL SINCE IT'S SO COMMON AND A CLEAR FLAW IN THE DESIGN. TO THE TUNE OF $199 YOU CAN REPLACE THE PART AND HAVE THE SAME THING HAPPEN ALL OVER AGAIN AT SOME OTHER RANDOM, UNSAFE TIME! THANK YOU GM FOR YET ANOTHER UNRELIABLE FAMILY VEHICLE. I WILL HAVE NO CHOICE, BUT TO REPLACE THE PART, AS THIS IS THE CAR USED FOR EVERY DAY TRANSPORTATION IN MY HOUSEHOLD TO SCHOOL, WORK AND BACK. RESEARCHING THE INTERNET HORROR STORIES CAN BE FOUND EVERYWHERE. IT SEEMS TRAGEDY HAS TO HAPPEN TO MAKE THIS $200 PART A RECALL. PLEASE REDESIGN AND REPLACE. THIS MOM CARES FOR HER KIDS.

WHILE DRIVING THE VEHICLE AT A NORMAL SPEED (55) ON A HIGHWAY, A DINGING SOUND COMES ON AND THE CAR GOES INTO REDUCED POWER MODE, LOSING SPEED. THE STABILITRAK AND THE TRACTION CONTROL WARNING COMES ON. THIS MAKES IT DIFFICULT TO CROSS TRAFFIC AT INTERSECTIONS AS THE CAR WILL BARELY ACCELERATE. THERE IS NO WARNING THAT THIS IS GOING TO HAPPEN. ALSO, THE CARS BEHIND YOU DO NOT KNOW WHY YOU ARE SLOWING DOWN. THEN WHEN YOU TURN THE CAR OFF AND RESTART IT, THE LIGHTS GO OFF AND THE CAR DRIVES FINE. AFTER THREE TRIPS TO THE GMC DEALER, THE THROTTLE BODY WAS DETERMINED TO BE THE PROBLEM. GMC HAS ISSUED SPECIAL CIRCUMSTANCES WARRANTY ON THE 2007 & THE 2009 BUT NOT THE 2008. I DO NOT FEEL THAT THE WARRANTY IS SUFFICIENT. I DO NOT UNDERSTAND WHY THERE IS NOT A RECALL BECAUSE AFTER SEARCHING THE FORUMS, I HAVE FOUND THAT THERE ARE NUMEROUS COMPLAINTS WITH THIS HAPPENING. I HAD MY GRANDKIDS IN THE CAR WITH ME AND WE COULD HAVE BEEN HURT WHEN WE HAD THE SUDDEN LOSS OF POWER WE EXPERIENCED.

MY FAMILY AND I WERE DRIVING OUT OF TOWN AND THEN STARTED TO FEEL THE CAR JERK AT TIMES AND THEN OUT OF NO WERE IT SAID STABILITY TRACTION CONTROL OFF AND REDUCED POWER OF ENGINE AND THEN ENGINE STARTED TO MAKE A TERRIBLE NOISE AND SHAKING LIKE IT WAS GOING TO GIVE OUT. I COULD BARELY PULL OVER. I HAVE TAKEN IT SEVERAL TIMES IN TO GET CHECKED FOR THE STABILITY AND THEY CAN NEVER FIND ANYTHING WRONG AND THEY SAY ITS ONE THING AND ALL I SEEM TO DO IS PAY FOR SOMETHING THAT DOESN'T NEED TO BE FIXED. THIS SAME ISSUE HAS HAPPENED 3 TIMES SINCE THEN. *TR

COMING HOME FROM OUT OF TOWN I NOTICED MY ACADIA STARTED JERKING, YET THERE WAS NO CHECK ENGINE LIGHT WELL NOTHING TELLING ME THAT SOMETHING WAS WRONG PLANNED TO TAKE IT TO THE MECHANIC THE NEXT DAY, WHEN I GOT UP THE NEXT DAY TO TAKE IT IN IT WOULD NOT GO IN REVERSE AND WOULD ONLY DRIVE LESS THAN 20 MPH SUDDENLY THE CHECK ENGINE LIGHT CAME ON BEING MY ONLY SOURCE OF TRANSPORTATION I TOWED IT TO A MECHANIC SHOP, THE MECHANIC TOLD ME THAT IT WAS THE TRANSMISSION BUT HE COULD NOT OFFER A RECONSTRUCTED TRANSMISSION BECAUSE THE 2008 TRANSMISSIONS CAME OUT FAULTY THAT I WOULD HAVE TO PURCHASE A NEW ONE AND THAT GMC KNEW ABOUT THIS SO THEY PUT OUT IN THE MARKET RENEWS AND IMPROVE ONES..... TOTAL COST 3,417.00 NOT TO MENTION INTEREST ON IT DUE TO HAVING TO BORROW THE MONEY SINCE I DIDN'T HAVE IT. MY QUESTION WHY WOULDN'T GMC PUT OUT A RECALL INSTEAD OF IMPROVING IT FOR THE OWNERS TO PURCHASE. *TR

SLOWED MY VEHICLE APPROACHING A DRIVE THRU. I SLOWLY BEGAN TO ACCELERATE, GAS PEDAL WENT TO THE FLOOR. MY LEFT FOOT WAS DANGLING. VEHICLE'S RPMS AND ENGINE WAS ROARING AT MAXIMUM SPEED. I THEN PLACED BOTH FEET ON MY BRAKES TO NO AVAIL! KNEW I WAS GOING TO CRASH WITH NO WAY TO STOP! I BRACED MY SELF FOR THE IMPACT. MY GAS PEDAL STUCK AND MY ANTI LOCK BRAKES FAILED. THE VEHICLE I HIT WAS A TRUCK WITH ITS TAIL GATE DOWN. THE IMPACT PUSHED UP HIS TAIL GATE. MY HOOD, FENDERS, RADIATOR AND FAN BELT WERE CRUSHED. MY VEHICLES BUMPER WAS NOT INVOLVED OR DAMAGED. OVER $6,000.00 IN DAMAGES TO MY VEHICLE AND THE SENSORS FAILED TO REGISTER THE ACCIDENT, THE GAS PEDAL OR THE BRAKE PROBLEM! AFTER CONTACTING GM CORPORATE, THEY DENIED MY CLAIM! IT WAS 8:45 A.M ON A CLEAR DAY. I AM NOW FRIGHTENED TO DRIVE MY VEHICLE NEAR SCHOOLS OR CROWDED PLACES. I PURCHASED THIS VEHICLE BRAND NEW AND MAINTAIN IT EXCLUSIVELY THROUGH OUR LOCAL GM DEALERSHIP. I HAVE ALL SUPPORTING DOCUMENTATION OF REPAIRS AND MAINTENANCE. *TR

TL* THE CONTACT OWNS A 2008 GMC ACADIA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 20 MPH, THE ENGINE RPMS INCREASED HOWEVER THE VEHICLE FAILED TO ACCELERATE WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS SCHEDULED TO BE DIAGNOSED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE AND CURRENT MILEAGE WAS 75,000. THE VIN WAS NOT AVAILABLE. *TR

TL* THE CONTACT OWNS A 2008 GMC ACADIA. THE CONTACT STATED THAT SHE UTILIZED THE CRUISE CONTROL AT 50 MPH. THE FOLLOWING DAY, THE VEHICLE ABNORMALLY ACCELERATED FROM 40 MPH TO 50 MPH WITHOUT WARNING. THE CRUISE CONTROL FUNCTION WAS NOT BEING UTILIZED AT THE TIME OF THE FAILURE. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS AND A TEST DRIVE, BUT THE FAILURE COULD NOT BE DUPLICATED. THE CAUSE OF THE FAILURE WAS UNKNOWN AND THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSUE. THE FAILURE MILEAGE WAS 60,000. THE VIN WAS UNAVAILABLE.