2015 GMC Sierra 1500 Power Train

CALLED DEALERSHIP ABOUT ONE WEEK AFTER PURCHASE IN AUGUST 2015 AND REPORTED VIBRATION IN VEHICLE AT SPEED OF 70 AND ABOVE. NO RETURN CALL. NEVER HAD TRUCK INSPECTED. VIBRATION HAS INCREASED WITH AGE OF THE TRUCK. TRUCK HAS 55,000 MILES ON IT NOW. JUST NOW FINDING OUT ABOUT NUMEROUS COMPLAINTS HAVING BEEN FILED. FOUND INFORMATION AT AUTOGUIDE.COM. GM HAS ISSUED BULLET6IN #PI1354C RELATIVE TO THIS.

STARTING THE VEHICLE I'M PUTTING THE TRUCK IN REVERSE, THE TRUCK LUNGES BACKWARDS. ALSO A VIOLENT JERK OF THE VEHICLE HAPPENS. THIS HAPPENS A MAJORITY OF THE TIME. PUTTING THE VEHICLE INTO GEAR TO DRIVE I HAVE A VIOLENT JERK AND A LOUD NOISE. THE TRUCK DOES NOT LUNGE FORWARD WHEN PLACING THE TRUCK INTO DRIVE. THIS HAPPENS A COUPLE OF TIMES A DAY. THIS IS NOT AN ISOLATED INCIDENT.

SAFETY ISSUE: KNOWN ISSUE TO GM BUT COMPANY REFUSES TO ACKNOWLEDGE AS A SAFETY ISSUE. A LARGE NUMBER OF GMC/CHEVROLET PICKUPS HAVE VIBRATION ISSUE AT HIGHWAY SPEEDS CAUSING STRESS AND UNNATURAL WEAR ON VEHICLE COMPONENTS WHICH MIGHT FAIL CAUSING A CRASH AT HIGHWAY SPEEDS. GM DEALERS UNWILLING TO SOLVE ISSUE ON MAJORITY OF AFFECTED VEHICLES (2014-2015).

THE AUTOMATIC TRANSMISSION HAS A HARD SHIFT WHEN GOING FROM PARK TO REVERSE OR PARK TO 1ST GEAR. THE VEHICLE SHUDDERS WHEN AT INTERSTATE SPEEDS CAUSING A SHAKE SIMILAR TO RUNNING OVER INTERSTATE ROAD BUMPERS/ LINES. THIS HAS BEEN BROUGHT UP TO THE DEALERSHIP SEVERAL TIMES AND THEY RESET THE "LEARNING TRANSMISSION" FIXING THE PROBLEM TEMPORARILY FOR A DAY OR TWO.

SIGNIFICANT CLUNKING IN REAR END INDICATIVE OF IMPROPER ALIGNMENT OR LASH IS REAR DIFFERENTIAL. EXCESSIVE VIBRATION AT SPEEDS OVER 65 MPH WHEN THE DRIVELINE IS UNDER LOAD. VEHICLE HAS BEEN TO THE GMC DEALERSHIP WHERE IT WAS PURCHASED THREE TIMES WITH NO RESOLUTION TO DATE. CURRENT MILEAGE IS 18,000.

EXTREME LAG/DELAY- HARSH ENGAGEMENT WHEN SHIFTING FROM PARK TO REVERSE. ITS LIKE YOU ARE BACKING INTO SOMETHING? WHEN CRUISING 28-32 MPH AND RELEASING ACCELERATOR(AS IF YOU WERE COASTING INTO A TURN) WHEN SLOWING THE VEHICLE SEEMS TO SHIFT UP AND LUNGE ENTERING THE TURN. CLUNKS AND SHIFTS HARD WHEN CRUISING NORMALLY WHEN YOU HAVE TO RELEASE THE GAS PEDAL AND SLIGHTLY REACCELERATE, CAUSING THE DRIVER TO HESITATE. VEHICLE SHUTTERS AND HARD ACCEL 10X WORSE WHEN TOWING A 7000 # TRAILER (TRUCK IS RATED OVER 12,000 LBS. TOWING).

DELAYED ENGAGEMENT IN DRIVE, TRANSMISSION CLUNKS, RPM FLARES AND TRUCK QUITS MOVING UNEXPECTEDLY. SHUDDER AT 3- 50 MPH, VIBRATES STEERING WHEEL AND LEAVES AN UNEASY FEELING THE TRUCK IS GOING TO QUIT MOVING.

PURCHASED VEHICLE WITH JUST OVER 9,000 MILES ON IT. NOTICED EXCESSIVE VIBRATION AT HIGHWAY SPEEDS. AT JUST OVER 12,000 MILES DRIVESHAFT SUFFERED CATASTROPHIC FAILURE AT LOW SPEED IN A RESIDENTIAL AREA. FAILURE OCCURRED ON A WET ROAD UNDER MODERATE ACCELERATION AT AROUND 10-15 MPH. DRIVESHAFT LITERALLY RIPPED INTO TWO PIECES.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING 60 MPH, THE VEHICLE BEGAN TO DECELERATE AND THE ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TOWED TO A DEALER WHERE IT WAS DIAGNOSED THAT A GEAR CYLINDER FRACTURED. THE VEHICLE WAS REPAIRED, BUT WAS UNABLE TO BE DRIVEN. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 4,000.

TL* THE CONTACT OWNS A 2015 GMC SIERRA 1500. WHILE DRIVING VARIOUS SPEEDS, THE TRANSMISSION VIBRATED AND CAUSED A HESITATION WHEN THE GEARS SHIFTED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER AND REPAIRED; HOWEVER, THE FAILURE RECURRED SEVERAL TIMES. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 50.

ON TWO SEPARATE OCCASIONS MY TRUCK HAS ACTED LIKE IT IS IN NEUTRAL WHILE DRIVING. THE DRIVE SYSTEM DISENGAGES AND THE ENGINE JUST REVS. ONCE THIS HAPPENED WHILE DRIVING DOWN THE ROAD, THE OTHER WHEN THE TRUCK WAS STUCK IN SNOW. WHEN IT WAS STUCK IT DISABLED THE 4WD SYSTEM COMPLETELY, RENDERING THE VEHICLE STRANDED.

DRIVING NORTH ON THE GARDEN STATE PARKWAY IN THE CENTER LANE IT FELT LIKE I HAD A BACK TIRE BLOWOUT BUT WHAT HAPPENED WAS MY REAR AXLE BROKE CAUSING MY VEHICLE TO BE EXTREMELY HARD TO CONTROL. I WAS TRYING TO STEER THE VEHICLE BUT COULD NOT CONTROL THE TRUCK, IT FELT LIKE I HAD LIMITED BRAKING ABILITY, SMASHING INTO GUARDRAIL IT FINALLY CAME TO A STOP.

2015 GMC SIERRA 6-SPEED AUTOMATIC TRANSMISSION FAILURE @ 1800 MILES. AS I WAS DECELERATING FROM APPROXIMATELY 30 MPH TO MAKE A TURN INTO A ROAD THE TRANSMISSION DOWNSHIFTED AS EXPECTED TO LOW GEAR. AS I ACCELERATED THE TRANSMISSION SHIFTED TO 2ND NORMALLY. AT THIS POINT THE TRANSMISSION SHOULD HAVE SHIFTED INTO 3RD GEAR BUT THE TACHOMETER JUMPED TO 3000RPM BEFORE I REALIZED THAT THE TRANSMISSION HAD SHIFTED INTO WHAT SEEMED LIKE NEUTRAL. THIS LEFT ME BLOCKING TRAFFIC WITH A TRUCK THAT WOULD NOT GO OVER 20 MPH. WHEN I SLOWED SUFFICIENTLY THE TRANSMISSION WOULD PICK UP 2ND GEAR AGAIN. BEING CLOSE TO HOME I WAS ABLE TO LIMP HOME. WHEN I REACHED HOME I PAST MY DRIVEWAY AND WENT TO BACK IN AS I USUALLY DO. THE TRANSMISSION WOULD NOT PICK UP REVERSE! BY THIS TIME A CHECK ENGINE LIGHT CAME ON. I THEN HAD TO DRIVE ABOUT A MILE DOWN THE ROAD TO FIND A PLACE TO MAKE A U TURN SO I COULD PULL IT INTO MY DRIVEWAY. THE TRUCK WAS TOWED TO THE DEALERSHIP WHERE A MECHANIC EXPERIENCED THE SAME PROBLEM ON A TEST DRIVE. (HE HAD TO PUSH THE TRUCK BACKWARDS BY HAND TO BE ABLE TO RETURN TO THE SHOP.) CURRENTLY THE TRANSMISSION HAS BEEN REMOVED FROM MY BRAND NEW TRUCK PENDING INVESTIGATION. IT HAS ONLY TO GEARS 1ST AND 2ND. THIS IS A SERIOUS FAILURE THAT COULD HAVE HAPPENED WHILE MERGING INTO TRAFFIC ON THE INTERSTATE. LUCKILY I WAS ON A BACK ROAD IN THE MIDDLE OF WINTER! *TR

TL* THE CONTACT OWNS A 2015 GMC SIERRA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE TRANSMISSION VIBRATED CAUSING A HESITATION WHEN THE GEARS SHIFTED. THE CONTACT MENTIONED THAT THE FAILURE WAS MOST SEVERE WHILE DRIVING AT SPEEDS BETWEEN 40-50 MPH. THE VEHICLE WAS TAKEN TO A DEALER WHO CHANGED THE GEAR RATIO AND ADJUSTED THE REAR END. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 250.

I HAD MADE A COMPLAINT TO CHAPDELAINE BUICK- GMC THAT MY BRAND NEW TRUCK DID NOT SEEM TO GO INTO FOUR WHEEL DRIVE. I WAS TOLD TO BRING THE TRUCK TO THE DEALERSHIP AND THEY WOULD CHECK IT FOR ME. I WAS TOLD BY THE SERVICE DEPARTMENT THAT THE TRUCK WORKED JUST FINE IN FOUR WHEEL DRIVE. I THEN NOTICED THAT THE TRUCK SEEM TO SHIFT VERY ROUGH AND I CALLED THE SERVICE DEPARTMENT AND TOLD THEM THAT SOMETHING HAD TO BE WRONG. THE SERVICE DEPARTMENT ASKED ME TO BRING THE TRUCK BACK DOWN TO THEM THE NEXT DAY AND THEY WOULD TAKE IT FOR A TEST DRIVE. WHILE I WAS DRIVING THE TRUCK TO THE DEALERSHIP IT SHIFTED FROM DRIVE INTO NEUTRAL.I COASTED TO A STOP PUT THE VEHICLE INTO PARK SHUT OFF AND RESTARTED THE ENGINE AND THEN SHIFTED BACK INTO DRIVE AND TRIED TO DRIVE AGAIN. THIS TIME THE VEHICLE SERVICE ENGINE LIGHT CAME ON AND THE VEHICLE STAYED IN LOW GEAR AND WOULD NOT SHIFT INTO A HIGHER GEAR. THE BEST SPEED I COULD MAKE WAS 10 MPH. I STOPPED THE VEHICLE AND RESTARTED TWO MORE TIMES. ON THE SECOND TRY THE VEHICLE DID GO INTO DRIVE. I MADE IT TO THE DEALERSHIP AND THEY TOOK IT FOR A TEST DRIVE AND UPON THEIR RETURN GAVE ME A LOANER VEHICLE. THEY HAD TO REBUILD THE TRANSMISSION ON MY BRAND NEW TRUCK WHICH TOOK ABOUT THREE DAYS. THANKFULLY THIS EVENT TOOK PLACE ON A BACK ROAD WITH LITTLE TRAFFIC. IF IT HAD HAPPENED ON A BUSY ROAD AN ACCIDENT MIGHT HAVE OCCURRED. *TR

I BOUGHT A BRAND NEW GMC IN SAN DIEGO CA. I TOOK IT HOME TO DISCOVER THAT THE UNDERCARRIAGE IS COVER IN RUST. EVERYTHING FROM THE TIE RODS, TO THE DRIVE SHAFT. ANYTHING METAL IS COVERED IN RUST INCLUDING THE FRAME. ITS NOT A SURFACE RUST,THE RUST IS CORRODING THESE PARTS ALREADY AND THE TRUCK IS BRAND NEW. HOW COULD THIS BE SOLD AS A BRAND NEW TRUCK? THIS IS A SAFETY ISSUE AS WELL. WE DO NOT HAVE SNOW HERE THAT WOULD HAVE SPRAYED SALT ON HE TRUCK TO DO THIS. THIS TRUCK HAS BEEN CORRODING FOR SOME TIME NOW EVEN THO THEY SAID IT WAS JUST BUILT. RUST DOESN'T GO AWAY ONLY GETS WORSE AND A BRAND NEW TRUCK SHOULDN'T BE COVER IN IT. I'M VERY CONCERNED WITH THE SAFETY OF THIS TRUCK. *TR