2011 GMC Sierra 1500 complaints

WHILE DRIVING 50 MPH. WITH OUT NOTICE, THE FRONT PASSENGER TIRE EXPLODED. CHECKING THE TIRE SHOWS IN MIDDLE OF TREAD THE TIRES STEEL BELT JUST BLEW AND POPPED OUT OF THE TREAD. THO THERE IS HIGH MILEAGE ON THE TIRES THE TREAD WEAR IS STILL VERY GOOD. NO DAMAGE TO SIDE WALL AND NOTHING WAS HIT ON ROADWAY. TIRE JUST EXPLODED WITH OUT NOTICE. THE GAP IS ACROSS THE ENTIRE WIDTH OF TREAD APPROX 6 INCHES. *TR

MY 2011 GMC SIERRA HAD 40000 MILES ON IT AND THE DASHBOARD ABOVE THE AIRBAG HAS CRACKED. I AM AFRAID OF WHAT MY HAPPEN TO THE DASH IF THE AIRBAG DEPLOYS. THE DASH MAY SPLINTER AND BECOME PROJECTILES IN THE VEHICLE. I HAVE HEARD THIS IS A VERY COMMON ISSUE AND 1500+ PEOPLE HAVE SIGNED A PETITION ABOUT IT. PLEASE LOOK INTO HAVING GM RECALL THESE VEHICLES BEFORE SOMEONE IS SEVERELY INJURED. THANK YOU *TR

PULLING OUT OF A SNOW COVERED PARKING LOT THE ENGINE LIGHT CAME ON DIC THEN THE MESSAGE, REDUCED ENGINE POWER, THE ENGINE BEGAN TO RUN VERY ROUGH AT A LOWER IDLE SPEED, AS BEGAN TO HAPPEN THE TRUCK LURCHED FORWARD AND I HAD TO PRESS HARD ON THE BRAKES VERY HARD LIKE I WAS FIGHTING THE ENGINE SPEED TO SLOW, THEN THE MESSAGE CHANGED TO SERVICE TRACTION CONTROL, I HAD NO CONTROL OVER THE GAS PEDAL AND COULD ONLY MOVE AT ABOUT 5MPH, THEN THE MESSAGE CHANGED TO SERVICE STABILITRAK, I GOT TO ANOTHER AREA OF THE PARKING LOT, PARKED AND SHUT OFF THE ENGINE FOR A FEW MINUTES AND THE ISSUE WOULD NOT GO AWAY. I WAS MORE THAN TWO HOURS FROM MY HOME. I REMOVED THE RED BATTERY CABLE THEN REPLACED IT AND WAS ABLE TO START THE ENGINE AND IT OPERATED NORMALLY FOR A WHILE. ONE AND A HALF HOURS LATER WHILE DRIVING 60MPH IT HAPPENED AGAIN AND I COST OFF THE INTERSTATE AND COULD NOT GET IT RUNNING AGAIN. HAD TO BE TOWED TO A DEALERSHIP. THEY SAID THERE WAS A SERVICE BULLETIN TO REPLACE THE THROTTLE BODY BUT WANT TO CHARGE ME $215 TO CLEAN THE OTHER FUEL RELATED PARTS. THIS NEEDS TO BE A RECALL. IF IT WAS A RECALL I WOULD NOT HAVE TO PAY $215 TO COMPLETE THE WORK PROPERLY. *TR

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED THAT ALL THE INSTRUMENT PANEL WARNING LIGHTS ILLUMINATED AND THE GAUGES FAILED. ON ANOTHER OCCASION, THE CONTACT STATED THAT THE OIL AND AIR BAG WARNING LIGHTS ILLUMINATED. IN ADDITION, THE WASHER FLUID WARNING LIGHT ILLUMINATED, ALTHOUGH THE WASHER FLUID WAS FULL. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBERS: 13V315000 (AIR BAGS), AND 14V614000 (ELECTRICAL SYSTEM). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS NOT AVAILABLE.

NEAR 69,150 MILES THE OIL PRESSURE GAUGE FOR MY GMC SIERRA 1500 2011, ALL AT ONCE, WENT TO ZERO GIVING ME A WARNING MESSAGE TO IMMEDIATELY STOP THE ENGINE. IT TURNED OUT TO BE A FAULTY OIL PRESSURE SENSOR. IN ADDITION OIL WAS LEAKING BADLY OUT AROUND THE SENSOR AND COMPLETELY COATED EVERYTHING IN THE ENGINE COMPARTMENT AND UNDERNEATH. A YEAR LATER THE SENSOR WENT BAD AGAIN. GMC SAYS ITS NOT COVERED UNDER THE POWER TRAIN WARRANTY AND ITS COSTING ME $400 EACH TIME IT GOES BAD. *TR

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. WHILE THE VEHICLE WAS PARKED, THE CONTACT NOTICED THAT THE BUMPER FOG LIGHT ASSEMBLY WAS FRACTURED ON THE FRONT DRIVER SIDE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 33,000.

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED UPON ENGAGING THE EMERGENCY BRAKE AND RELEASING IT, THE HOOD LATCH OPENED INDEPENDENTLY. THE VEHICLE WAS TO BE INSPECTED BY AN AUTHORIZED DEALER. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 10,000.

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED THAT THE DRIVER'S SIDE AIR BAG FAILED TO DEPLOY AFTER A TRACTOR TRAILER CRASHED INTO THE VEHICLE. THE SERVICE AIR BAG WARNING LIGHT ILLUMINATED ON THE INSTRUMENT PANEL. A POLICE REPORT WAS FILED. THE DRIVER AND PASSENGER SUSTAINED INJURIES TO THE KNEE, NECK, BACK AND SHOULDER. THE DRIVER HAD TO UNDERGO KNEE AND SHOULDER SURGERY. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS TAKEN TO THE DEALER WHO WAS UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 44,000.

NOTICED ONE MORNING WHEN STARTING UP MY TRUCK THE VALVES WERE TAPPING. LIKE OUT OF ADJUSTMENT. MY 5.3 IS ROLLER LIFTERS SO I WAS SURPRISED. TOOK IT TO DEALER AND WAS TOLD THAT GM HAD A RECALL ON CADILLAC, CHEVY AND GMC 5.3 AND 6.2 ENGINES WITH DEFECTIVE LIFTERS. DEALER REPLACED THE LIFTERS. TOOK A WEEK. WHEN I PICKED UP TRUCK SERVICE ADVISER TOLD ME TO EXPECT TO COME BACK AROUND 60K FOR A NEW CAMSHAFT. NOW WHAT! *TR

STARTED TRUCK UP AND LET IDLE FOR TWO MINUTES. UPON TAKE OFF, THE TRACTION CONTROL LIGHT CAME ON AND WAS IMMEDIATELY FOLLOWED BY THE CHECK ENGINE LIGHT WITH A MESSAGE STATING ENGINE REDUCED POWER. THE TRUCK THEN BEGINS TO RUN VERY ROUGH AND WHEN THE BRAKES WHERE APPLIED IT VIOLENTLY AND UNCONTROLLABLY LUNGED FORWARD. I PULLED OFF THE ROAD, TURNED OFF THE ENGINE, AND WAITED A MINUTE OR TWO. UPON RESTARTING THE ENGINE, THE CHECK ENGINE LIGHT CAME ON BUT THE REDUCED POWER MESSAGE AND TRACTION LIGHT WHERE GONE. AFTER SITTING AT A LIGHT FOR A FEW SECONDS, THE SYMPTOMS WHERE BACK, NEARLY CAUSING ME TO REAREND THE VEHICLE IN FRONT OF ME. I PULLED OVER AGAIN, TURNED OFF THE ENGINE FOR A MINUTE, RESTARTED AND THE SAME RESULTS AS BEFORE OCCURED. NOW THIS HAPPENS EVERY TIME THE TRUCK IS RUNNING AND SITS IN THE SAME SPOT FOR MORE THAN TWO OR THREE MINUTES. *TR

TRANSMISSION VIBRATION IN THE 1500 TO 2000 RPM RANGE. *TR

MY STARTER OR FLY WHEEL IS CAUSING MY TRUCK TO NOT WANT TO START, ALSO THERE IS A RATTLING NOISE WHILE DRIVING AT ABOUT 1500 RPM, AND SOMETHING IS KNOCKING IN THE REAR OF MY TRUCK. ITS A 2011 WITH LESS THAN 40,000 MILES AND HAS BEEN TAKEN WELL CARE OF, NO REASON THIS SHOULD HAPPEN. LUCKILY STILL UNDER WARRANTY. *TR

WENT ABOUT A MILE WAS GETTING READY TO MAKE A LEFT ACROSS MD RT 4 WHEN I LOST POWER AND REDUCED ENGINE POWER LIGHT CAME, HAD A CLOSE CALL, ON DID SOME RESEARCH AND FOUND A TECHNICAL NOTICE ABOUT THROTTLE BODY AND INJECTOR SENSORS THEY NEED A RECALL. *TR

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED THAT THE VEHICLE WAS POWERED ON AND IN PARK WHEN IT LUNGED FORWARD ABNORMALLY. THE CONTACT HAD TO JUMP IN THE VEHICLE AND DEPRESS THE BRAKES TO STOP IT FROM TRAVELING ANY FARTHER. THE VEHICLE WAS TAKEN TO A DEALER FOR DIAGNOSIS HOWEVER, THE DEALER WAS UNABLE TO DETERMINE THE CAUSE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 90,000.

WHILE DRIVING AROUND A HIGHWAY BEND IN THE ROAD THE STEERING WHEEL LOCKED UP AND WOULD NOT MOVE GOING 60 MILES PER HOUR. I'M A BIG GUY AND REALLY USED ALL MY FORCE TO TURN THE WHEEL AND FINAL GOT TO BREAK FREE WITH A LOUD POP FROM THE STEERING COLUM AREA. THIS HAS HAPPENED ABOUT SIX TIME SINCE AND I NOW HAVE ONLY 20,000 MILES ON IT. I AM A SHOP OWNER AND ASE MASTER TECH, SO I KNOW WHAT I AM REPORTING THIS IS CRAZY DANGEROUS. *TR

I HAVE BEEN HEARING NOISES FROM REAR OF TRUCK , AND KEPT LOOKING FOR THE PROBLEM, FINALLY GRABBED THE BED AND SHOOK IT FROM SIDE TO SIDE AND SOUNDS LIKE THE TIRE IS FIXING TO FALL OFF, TOOK IT TO HALL GMC IN TYLER TX. ON 9-03-2013 THEY GREASED THE LEAF SPRINGS ? AND SAID THEY HAD FIXED THE PROBLEM,BUT WHEN ITS PARKED ON A HILL THERE IS TO MUCH WEIGHT ON AXLE FOR IT TO MOVE AND THEY KNEW THAT , SO WHEN I GOT HOME IN THE GARAGE IT STILL HAS AN INCH OR SO TRAVEL FROM SIDE TO SIDE MAKING AN AWFUL NOISE, TOOK IT BACK ON AFTER 5 OR 6 PHONE CALLS WAS TOLD TO COME AND GET THE TRUCK ON 9-23-2013 , THAT THEY ALL DO THAT ,IF ANYONE HAS A 2011 CHEVY OR GMC REAR DRIVE VEHICLE SHAKE IT FROM SIDE TO SIDE GIVE IT A REALLY GOOD SHAKE AND NEXT TIME YOU GO AROUND A CORNER FIXING TO PASS SOMEONE IT WILL SCARE YOU KNOWING THAT THE AXLE IS THAT LOSE. *TR

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING 43 MPH, THE VEHICLE LUNGED FORWARD AND EXHIBITED AN ABNORMAL NOISE. THE FAILURE RECURRED INTERMITTENTLY. THE VEHICLE WAS TAKEN TO A DEALER, WHO WAS UNABLE TO DETERMINE THE CAUSE OF THE FAILURE AND STATED THAT THE ABNORMAL NOISE WAS EXPECTED WITH THE TYPE OF POWER TRAIN IN THE VEHICLE. THE FAILURE WAS NOT REPORTED TO THE MANUFACTURER. THE FAILURE MILEAGE WAS 400. THE CURRENT MILEAGE WAS 11,728.

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 55 MPH, THE CONTACT HEARD A LOUD RATTLING NOISE OUTSIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSIS. THE TECHNICIAN STATED THAT THE FAILURE WAS CONTRIBUTED TO THE ENGINE LIFTERS WHICH WERE REPLACED; HOWEVER, THE NOISE PERSISTED. THE VEHICLE REMAINED AT THE DEALER FOR FURTHER INVESTIGATION. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 13,592.

DRIVING ON THE FREEWAY, WHEN TRUCK STARTED RUNNING ROUGH. I MANAGED TO MAKE IT TO THE SIDE OF THE FREEWAY BEFORE THE TRUCK STOPPED WORKING. TOWED TO GMC DEALER. BROKEN THROTTLE BODY SENSOR AND BROKEN STEERING POSITION SENSOR CONNECTOR. *TR

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED THAT WHILE UTILIZING THE FOUR-WHEEL DRIVE MODE, HE ATTEMPTED A LEFT TURN, BUT THE VEHICLE WOULD NOT GO FORWARD, UNTIL HE TURNED THE STEERING WHEEL BACK TO THE RIGHT. THE VEHICLE WAS NOT TAKEN TO A DEALER FOR INSPECTION OR REPAIRS. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 4,500. UPDATED 11/23/12 *CN

THERE IS PLAY IN THE REAR AXLES THAT EMIT A CLUNKING NOISE WHEN I AM SLOWLY BACKING OVER A GRADE WITH THE STEERING WHEELS TURNED. I DEMONSTRATED PLAY IN THE REAR AXLES TO THE GMC FACTORY REP AND HE SAID THE AXLE PLAY IS WITHIN TOLERANCES. MY CONTENTION IS THAT THE NOISE IS NOT NORMAL AND THAT THE GROOVES IN THE DIFFERENTIAL END OR THE AXLES THAT ACCEPT THE HORSESHOE SHAPED KEEPER CLIPS ARE MACHINED INCORRECTLY AND PUTTING EXCESSIVE STRESS ON THE CLIPS. EVENTUALLY THE CLIPS WILL FAIL RESULTING IN THE WHEEL COMING OFF. I FURTHER ARGUE THAT IF THE AXLE PLAY IS INDEED WITHIN TOLERANCES THEN THE TOLERANCES ARE WRONG. I TRIED TO MAKE THE INCORRECT TOLERANCE ARGUMENT TO THE FACTORY REP BY MAKING AN ANALOGY TO THE CORVAIR AND HE MISSED MY POINT. THE REAR SUSPENSION ON THE CORVAIR WAS ALSO WITHIN TOLERANCES AND MANY PEOPLE DIED. *JB

I WAS GOING 40MPH WHEN I WENT TO STOP QUICK TO AVOID AN ACCIDENT. I PRESSED ON BRAKES TRUCK DID NOT SLOW DOWN THEN ALL OF A SUDDEN IT DID DOWN SHIFT BUT AT THAT THE TRUCK LUNGED FORWARD CAUSING ME TO CLIP THE TRUCK IN FRONT OF ME. *TR

ACCELERATING UP ON RAMP TO MA PIKE WITH WHEEL TURNED. WHILE MERGING WITH TRAFFIC AT SPEED WHEEL LOCKED IN TURNED POSITION. FORCED WHEEL BACK STRAIGHT WITH MUCH FORCE AND A LOUD POP SOUND FROM STEERING. DUE TO THE AMOUNT OF FORCE REQUIRED, MANY PEOPLE WOULD NOT BE ABLE TO UNLOCK WHEEL AND MAY CRASH. THIS HAS HAPPENED TWO TIMES IN LAST 30 DAYS. DEALER REFUSES TO MAKE REPAIRS, CLAIMS CAN NOT MAKE HAPPEN WHEN IN THEIR POSSESSION. DEALER'S ONLY INSTRUCTS TO PULL OFF ROAD NEXT TIME IT LOCKS AND CALL ONSTAR FOR ASSISTANCE. *TR

2011 GMC SIERRA 1500. CONSUMER WRITES IN REGARDS TO RECALL NOTICE FOR THE REAR AXLE CROSS PIN FRACTURE *TGW THE CONSUMER STATED HE WAS NOT INFORMED THAT A RECALL WAS ISSUED PRIOR TO PURCHASING THE VEHICLE. *JB

WIPERS AND WASHERS COME ON BY THEMSELVES SURPRISING THE DRIVER AND PARTIALLY OBSCURING HIS VISION. IT IS NECESSARY TO PULL OVER AND SHUT OFF THE IGNITION TO GET THEM TO STOP, THEN IT HAPPENS ANGAIN EVERY SO OFTEN DURING AN OUTING.

WHEN I FIRST DROVE MY NEW TRUCK I NOTICED A SUBTLE KNOCKING NOISE COMING FROM THE REAR WHEN DRIVING SLOWLY OVER A BUMP. THE DEALER'S MECHANIC AGREED THERE WAS SOMETHING WRONG AND CALLED GM TECH ASSISTANCE ([XXX]) AND FOUND THE REAR AXLE HAD TOO MUCH PLAY. THE GROVE ON THE AXLE THAT RETAINS THE C RETAINING CLIP WAS MACHINED TOO CLOSE TO THE END OF THE SHAFT. THEY REPLACED THE AXLE. ONLY A PERSON WITH MECHANICAL EXPERIENCE COULD HAVE DETECTED THE SUBTLE NOISE. HAD IT GONE UNDETECTED EVENTUALLY THE C CLIP WOULD LIKELY FAIL AND THE AXLE AND WHEEL WOULD HAVE SLID OUT OF THE DIFFERENTIAL HOUSING. I DOUBT THIS MACHINING FAULT ON THE AXLE IS UNIQUE TO MY TRUCK. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

WHILE DRIVING DOWN THE INTERSTATE TODAY, THE STEERING LOCKED IN POSITION. IT TOOK BOTH HANDS TO FORCE IT TO TURN, AT WHICH A POP WAS HEARD FROM THE STEERING COLUMN AREA. VEHICLE HAS DRIVEN NORMALLY SINCE. TRUCK ONLY HAS 1,500 MILES ON IT. NO CONSUMER DEBRIS COULD HAVE CAUSED THE PROBLEM. *TR

OEM TIRES HAVE EXTREMELY POOR WET PAVEMENT TRACTION. FIRST INCIDENT OCCURRED LESS THAN 30 DAYS AFTER PURCHASING THE VEHICLE. IT HAD RAINED HEAVILY FOR AN EXTENDED TIME THAT DAY AND CONTINUING MODERATELY INTO THE EVENING. APPROACHING THE INTERSECTION WHERE I INTENDED TO MAKE A TURN ONTO A SIDE STREET, I BEGAN SLOWING TO WHAT I CONSIDERED A SAFE AND PRUDENT SPEED GIVEN THE ROAD CONDITIONS. UPON APPLYING THE BRAKES THE VEHICLE COULD NOT BE STOPPED RESULTING IN SLIDING COMPLETELY STRAIGHT THROUGH THE INTERSECTION, LUCKILY ON A GREEN SIGNAL LIGHT, AND WITH NO OTHER TRAFFIC IN MY PATH. REALIZING I WAS NOT SLOWING SUFFICIENTLY TO NEGOTIATE THE TURN, I DID NOT ATTEMPT TO TURN THE STEERING WHEEL AND CONTINUED DOWN THE SAME STREET TO A SAFE AREA TO TURN AROUND AND RETURN TO THE STREET I INTENDED TO TURN ONTO. SECOND INCIDENT, AGAIN ON WET PAVEMENT, WAS AFTER MAKING A COMPLETE STOP AT A TRAFFIC LIGHT CONTROLLED INTERSECTION. WHEN THE SIGNAL LIGHT CHANGED TO GREEN, I STARTED NEGOTIATING A LEFT TURN. APPROXIMATELY HALF WAY THROUGH THE INTERSECTION, AT A SPEED OF LESS THAN 10 MPH, REAR TIRES LOST TRACTION AND THE REAR OF THE VEHICLE TRIED TO SWAP ENDS. NEEDLESS TO SAY, MY WIFE YELLED AT ME TO STOP DOING WHATEVER IT WAS THAT I DID TO CAUSE SUCH ACTION, TO WHICH I REPLIED. I DID NOT DO ANYTHING OTHER THAN START MOVING FORWARD AT A SLOW PACE AND WAS JUST AS SURPRISED AS SHE WAS BY THE BEHAVIOR OF THE VEHICLE. *TR

TL*THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT STATED THE DRIVER SIDE SEAT BELT DID NOT HOLD AFTER IT WAS LATCHED. THE SEAT BELT WAS VERY LOOSE AROUND THE CONTACT. THE VEHICLE WAS NOT INSPECTED OR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 1,000.

2011 GMC SIERRA 1500 SLE CREW CAB Z71 4X4 COMING OFF OF THE EXPRESSWAY AND COMING TO A STOP AT A TRAFFIC LIGHT I APPLIED BRAKE PRESSURE. THE BRAKE PEDAL WAS UNUSALLY STIFF THEN ALL OF A SUDDEN THE ENGINE REVVED TO OVER 5000 RPM'S AND STARTING TO MOVE FORWARD. I HAD MY FOOT PUSHED FIRMLY ON THE BRAKE AND THE VEHICLE REMAINED REVVING AND MOVING FORWARD. I QUICKLY PUT IT IN PARK AND TURNED OFF VEHICLE. STARTED BACK UP AND NO ISSUES ON REMAINING DRIVE. CRUISE CONTROL WAS NOT ENGAGED. VEHICLE HAS LESS THAN 1400 MILES ON IT. *TR

TL* THE CONTACT OWNS A 2011 GMC SIERRA 1500. THE CONTACT WAS DRIVING UP AN INCLINE APPROXIMATELY 5 MPH AND PLOWING SNOW IN A RESIDENTIAL DRIVEWAY. WHEN THE CONTACT SHIFTED INTO REVERSE, THE VEHICLE BEGAN TO ROLL FORWARD AND THE ENGINE STALLED. THE VEHICLE CAME TO A STOP AFTER THE CONTACT APPLIED THE BRAKES REPEATEDLY. THE CONTACT STATED THAT THE FAILURE WOULD ALSO OCCUR WHEN DRIVING FORWARD ON AN INCLINE. THE VEHICLE WAS TAKEN TO A DEALER WHERE THE TECHNICIAN PERFORMED A ROAD TEST AND INFORMED THE CONTACT THAT THE VEHICLE WAS OPERATING AS DESIGNED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 800.

SECOND REPORT - SUDDEN ACCELERATION. 2011 GMC SIERRA PU TRUCK. ON DECEMBER 20, 2010 I WAS TRAVELING TO VISIT FRIENDS. WHILE ON HIGHWAY I SET THE CRUISE CONTROL FOR 70 MPH. I EXITED THE FREEWAY AND TRAVELED APPROXIMATELY 5 MILES ON CITY STREETS. UPON ENTERING A BEDROOM TOWNSHIP KNOWN FOR SPEED TRAPS I ATTEMPTED TO ENGAGE THE CRUISE CONTROL FOR 30 MPH. WHEN PRESSING THE CRUISE CONTROL TO SET THE SPEED I WAS TRAVELING (30 MPH) THE TRUCK DOWN SHIFTED AND ACCELERATED RAPIDLY (TO 4000 RPM). I IMMEDIATELY TAPPED THE BRAKE AND THE CRUISE CONTROL DISENGAGED. THIS IS THE SECOND TIME FOR THIS TRUCK TO DOWN SHIFT AND ACCELERATE RAPIDLY. A PREVIOUS REPORT WAS MADE IN NOVEMBER 2010. *TR

TL* THE CONTACT OWNS 2011 GMC SIERRA 1500. THE CONTACT WAS DRIVING 50 MPH WHEN THE VEHICLE HESITATED AND WAS SLOW TO ACCELERATE. THE VEHICLE WAS TAKEN TO THE DEALER AND THEY ADVISED THAT THERE WERE NO FAILURES AND THE VEHICLE WAS OPERATING AS DESIGNED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 1,500 UPDATED 02/23/11 *BF THE CONSUMER STATED THE VEHICLE WOULD HESITATE ON ACCELERATION. WHENEVER HE ATTEMPTED TO ACCELERATE, THE ENGINE WOULD LAG BEHIND FOR A SPLIT SECOND. WHEN THE ENGINE DID ENGAGE, THE DRIVE TRAIN WOULD BANG FROM THE ENGINE ACCELERATING. THE CONSUMER ALSO STATED THE VEHICLE WOULD NOT HOLD IN STEADY SPEED HIGH GEAR. THE TRANSMISSION WOULD CONTINUALLY GO BETWEEN 5TH AND 6TH GEAR. WHEN IN 6TH GEAR, THE VEHICLE WOULD LOSE SPEED. UPDATED 05/05/11

ON NOVEMBER 18, 2010, RETURNING FROM VACATION, DRIVING A NEW 2011 GMC SIERRA SLE PICK UP WITH LESS THAN 2,000 MILES USE, PULLING A 24' TRAVEL TRAILER. THE TRUCK WAS IN "TOW" MODE DESCENDING A 15% GRADE HILL AT APPROXIMATELY 45 MPH. I WAS NOT ACCELERATING WHEN THE TRUCK DOWN SHIFTED ITSELF AUTOMATICALLY FROM 5TH TO 3RD GEAR AND THE ENGINE ACCELERATED TO 4000 RPM. I APPLIED BRAKES AND TRUCK SHIFTED BACK TO 5TH GEAR. FORTUNATELY CONDITIONS WERE DRY AND NO ACCIDENT OCCURRED. CRUISE CONTROL WAS NOT ENGAGED AT THE TIME AS TERRAIN WAS VERY HILLY AND TWISTING. TRUCK SHIFTED AND ACCELERATED WITHOUT WARNING. CONTINUED TRIP WITHOUT FURTHER PROBLEMS. *TR