2015 GMC Canyon Power Train

SERVICE 4WD MESSAGE AGAIN APPEARS. WHEN DRIVING AND SWITCHING INTO 4WD RECEIVED THIS MESSAGE. THIRD TIME, NEEDS "REPROGRAMMING" . FILED COMPLAINT WITH GM ABOUT A DESIGN FLAW AND NO SATISFACTION.

I WAS TAKING OFF FROM A STOP SIGN AND TURNING RIGHT INTO TRAFFIC. ACCELERATION WAS MODERATE WHILE COMPLETING THE TURN WHERE I HAD TO REDUCE THE THROTTLE TO PREVENT THE TIRES FROM SPINNING. THE TRANSMISSION SHIFTED INTO TOO HIGH OF A GEAR AS A RESULT AND DID NOT DOWNSHIFT WHEN 50% PLUS THROTTLE POSITION WAS APPLIED. ENGINE HAD LACK OF POWER. I HAD TO STOMP IT TO THE FLOOR TO GET IT TO DOWNSHIFT. BY THIS TIME TRAFFIC WAS COMING UP ON ME FAST BECAUSE OF THE EXCESSIVE DELAY TRYING TO GET THE TRANSMISSION TO RESPOND. THE TRUCK HAS THE MOST CURRENT SOFTWARE UPDATES BASED ON WHAT THE DEALERSHIP TOLD ME.

VEHICLE STALLS THEN JERKS FORWARD WHEN ACCELERATING AND DECELERATING. JERKING CAUSES BRIEF LOSS OF CONTROL AS VEHICLE LURCHES FORWARD WHILE TRANSMISSION ATTEMPTS TO CATCH UP. THIS OCCURS AT ANY MOMENT WHILE DRIVING (UPHILL, DOWNHILL, TURNING, CITY STREETS AND HIGHWAYS) SEEMS TO OCCUR MOST WHEN SPEEDS ARE UNDER 60 MPH. CAUSES VERY UNSAFE CONDITIONS AND CHECK ENGINE LIGHT GOES ON AND OFF. OCCURRED TODAY AND HAS OCCURRED ALMOST EVERYDAY SINCE I'VE OWNED THE VEHICLE. (2 YEARS)

VEHICLE HAS A BAD SHUDDER WHERE IT IS CAUSING DRIVABILITY ISSUES. THIS OCCURS MAINLY WHEN DRIVING UP AN INCLINE WHEN AT ABOUT 1200 RPM. TRUCK WILL SOMETIMES JERK AND SHAKE AND HAS POOR THROTTLE RESPONSE CAUSING DANGEROUS DRIVING CONDITIONS. THIS HAS HAPPENED SEVERAL TIMES OVER THE COARSE OF ABOUT 3 MONTHS WITH THE LAST INSTANCE OCCURRING TODAY.

WHILE DRIVING WITH VEHICLE IN FOUR WHEEL AUTO THE TRANSFER CASE ENGAGED IN TO 4 WHEEL HIGH AND WOULD NOT DISENGAGE. THIS WOULD BE MORE OF GREAT SAFETY CONCERN IN THE EVENT THAT A DRIVER IS NOT ABLE TO PULL OVER AND STOP. THE VEHICLE WOULD NOT DISENGAGE THE FOUR WHEEL DRIVE AND REQUIRED TO BE TOWED TO DEALERSHIP. THE WORK PERFORMED TO CORRECT THIS ISSUE INDICATED THERE WAS AN EXCESSIVE AMOUNT OF CORROSION IN THE THE CONNECTORS RELATED TO THE "RANGE SELECTOR" AND OTHER RELATED COMPONENTS. THIS APPEARED TO FIX THE ISSUE, HOWEVER THE ISSUE HAS RESURFACED OVER TIME AND AGAIN SEEMS RELATED TO CORROSION. IN MORE RECENT OCCURRENCES THE VEHICLE ENGAGED INTO FOUR WHEEL DRIVE WHILE DRIVING AND IT WAS NOT SET IN FOUR WHEEL AUTO. THIS IS EXTREMELY CONCERING AS I STOPED USING FOUR WHEEL AUTO BECAUSE OF THIS PAST EVENT. AGAIN THIS ENGAGEMENT OF THE FOUR WHEEL DRIVE WHEN THE DRIVER IS NOT ABLE TO RESPOND ACCORDINGLY COULD LEAD TO INJURY.

TRANSMISSION STARTED SHUDDERING VERY BADLY WHEN TAKING OFF FROM A STOP SIGN UNDER WET CONDITIONS. THIS OCCURRED WHEN THROTTLE WAS REDUCED AFTER THE REAR WHEELS BROKE TRACTION. GM KNOWS ABOUT THE TRANSMISSION ISSUES AND THE DEALERSHIP HAS REFUSED TO REPAIR IT.

HAD VEHICLE SERVICED UNDER WARRANTY SEVERAL TIMES FOR TRANSMISSION ISSUES. I WAS TOLD BY THE DEALER I HAD THE MOST CURRENT SOFTWARE UPDATES AS OF MARCH OF 2018. VEHICLE CONTINUES TO BEHAVE BADLY UNDER CERTAIN CIRCUMSTANCES. TRANSMISSION DOES NOT DOWNSHIFT PROPERLY IF NEEDING TO ACCELERATE HARD. ENGINE RPM'S REV TO ABOUT 5,000 RPM AND THE TRANSMISSION GOES INTO TOO LOW OF A GEAR, UNTIL THE CORRECT GEAR IS FOUND. THIS CAUSES A DELAY IN RESPONSE THAT CREATES A SAFETY HAZARD. HAD ONLY ONE INSTANCE WHERE THE TRUCK ACCELERATED HARD OUT OF A 90 DEGREE TURN EVEN THOUGH ONLY LIGHT PEDAL WAS USED. TRANSMISSION SHUTTERS UNDER LIGHT LOAD WHEN GOING UP A SLIGHT UPGRADE. DEALERSHIP DOESN'T NOT WANT TO ACKNOWLEDGE THERE IS A PROBLEM. I WAS TOLD I WOULD BE CONTACTED IF FUTURE UPDATES WERE AVAILABLE AND HAVE HEARD ABSOLUTELY NOTHING.

THE TRANSMISSION CAUSES DANGEROUS DRIVING CONDITIONS. I HAVE THE SAME COMPLAINT AS SEVERAL OTHERS HAVE REPORTED.THE TRANSMISSION FAILS TO DOWNSHIFT AT LOWER SPEEDS CAUSING THE HESITATION WHEN ACCELERATION IS NEEDED. PRESSING DOWN FURTHER ON THE ACCELERATOR WILL LUNGE FORWARD POSSIBLE INTO CROWED ROAD WAY.

AUTOMATIC TRANSMISSION. WHEN GOING UP A SLIGHT INCLINE TRANSMISSION STALL ON DOWN SHIFTING.DRIVER MUST FLOAT THE GAS PEDDLE OR PRESS FOR ADDITIONAL ACCELERATION IN ORDER TO CLIMB A SLIGHT INCLINE ON REGULAR ROAD TRAFFIC . INCLINE COULD BE NO MORE THAN 15 DEGREES

BETWEEN 20 AND 40 MPH TRUCK FAILS TO SHIFT TO A LOWER GEAR AND INCREASE SPEED. THIS CAUSES THE DRIVER TO KEEP PRESSING ON THE GAS AND THEN VEHICLE DECIDES TO SHIFT TO A LOWER GEAR AND LURCHES FORWARD, IF YOU'RE IN TRAFFIC THIS IS WHEN THE VEHICLE IS MOST DANGEROUS AND IF THE WEATHER IS SEVERE (SNOW OR ICE) COULD CAUSE YOU TO LOOSE CONTROL OF VEHICLE. I'VE NOTIFIED GM THROUGH THEIR ASSISTANCE CENTER AND HAVE YET TO HEAR FROM A GM ENGINEER. THE SHIFTING PROBLEM IS WELL DOCUMENTED ON THE WEB.

TRUCK TRANSMISSION CAUSES DANGEROUS DRIVING CONDITIONS I HAVE SAME COMPLAINT AS SEVERAL OTHERS IN THE NHTSA CUSTOMER COMPLAINT SECTION. BASICALLY THE TRANSMISSION FAILS TO DOWNSHIFT AT LOWER SPEEDS CAUSING THE VEHICLE TO HESITATE WHEN ACCELERATION IS NEEDED UNTIL IT DOWNSHIFTS APPROPRIATELY. PRESSING DOWN HARD ON THE ACCELERATOR WILL RESULT IN A DOWNSHIFT, BUT THIS IS A POTENTIALLY DANGEROUS MANEUVER IN CROWED ROAD CONDITIONS.

I HAVE SAME COMPLAINT AS SEVERAL OTHERS IN THE NHTSA CUSTOMER COMPLAINT SECTION. BASICALLY THE TRANSMISSION FAILS TO DOWNSHIFT AT LOWER SPEEDS CAUSING THE VEHICLE TO HESITATE WHEN ACCELERATION IS NEEDED UNTIL IT DOWNSHIFTS APPROPRIATELY. PRESSING DOWN HARD ON THE ACCELERATOR WILL RESULT IN A DOWNSHIFT, BUT THIS IS A POTENTIALLY DANGEROUS MANEUVER IN CROWED ROAD CONDITIONS. I HAVE ALSO GONE TO MANUAL TRANSMISSION MODE BUT THIS IS ALSO POTENTIALLY DANGEROUS IN CROWDED CONDITIONS AND CERTAINLY INCONVENIENT. SEEMS THE VOLUME OF THIS COMPLAINT WARRANTS A GMC RESPONSE.

THE TRUCK DOES NOT SHIFT PROPERLY, I EXPERIENCE ROUGH SHIFTS. IT DOESN'T DOWNSHIFT, FEELS LIKE TRUCK IS MISFIRING, AND I EXPERIENCE SLOW THROTTLE RESPONSE. OVERALL I DON'T FEEL SAFE IN THIS TRUCK AND SINCERELY REGRET MY PURCHASE. I'VE GIVEN THE TRANSMISSION A CHANCE TO BREAK IN AND LEARN, BUT IT'S A REAL PROBLEM. *TR

VEHICLE WILL NOT DOWN SHIFT WHEN SLOWING FROM A HIGHER SPEED AND THEN NEEDING TO ACCELERATE. VEHICLE WILL "CHUG" AND SQUAT UNTIL IT EVENTUALLY DOWN SHIFTS, OFTEN TIMES THROUGH TWO OR MORE GEARS CAUSING OVER ACCELERATION AND OVER REVVING OF ENGINE. COUPLE OF TIMES WHEN COMING TO FULL STOP AT STOP SIGN, VEHICLE STAYS IN 5TH OR 6TH GEAR UPON ACCELERATION FOR A FEW SECONDS AND THEN JUMPS GEARS TO PICK UP SPEED. DRIVING ON CRUISE IN MODERATE HILLS, VEHICLE WILL NOT DOWN SHIFT SOON ENOUGH UNTIL EVENTUALLY ENOUGH SPEED IS LOST THAT VEHICLE DOWN SHIFTS MULTIPLE GEARS FROM APPROXIMATELY 1800 RPM TO WELL OVER 3000. PROBLEM MANIFESTS ITSELF IN BOTH CITY AND HIGHWAY DRIVING.

AT LOW SPEEDS, DOESN'T MATTER IF YOU ARE TURNING OR GOING STRAIGHT, THE TRANSMISSION WILL NOT SHIFT PROPERLY WHEN APPLYING PRESSURE TO THE GAS PEDAL. IT FEELS LIKE YOU ARE DRIVING A MANUAL TRANSMISSION IN 4TH GEAR WHEN IT SHOULD BE IN 2ND. WHEN IT DOES SHIFT, IT WILL DROP TWO GEARS AND YOU COULD BE ON TOP OF THE CAR IN FRONT OF YOU. THE CANYON'S TRANSMISSION IS NOT PREDICTABLE AND COULD PUT YOU IN A DANGEROUS POSITION IN TRAFFIC. HAVE HAD THE VEHICLE AT THE DEALER WHERE THEY APPLIED AN UPDATE PER A GM BULLETIN, HELPED SOME BUT STILL HAVE THE PROBLEM. TRANSMISSION MAKES A TERRIBLE GRINDING/HOWLING NOISE AT LOW SPEED. GM SAYS THIS IS A NORMAL CHARACTERISTIC OF THIS TRUCK, I SAY IT IS DANGEROUS. GM NEEDS TO BETTER ADDRESS THIS PROBLEM THAN THEY HAVE. THIS HAPPENS EVERYDAY THE TRUCK IS DRIVEN.

WHILE DRIVING AT LOW SPEEDS THE TRANSMISSION SEEMS TO FLOAT BETWEEN GEARS AS IF TRYING TO FIND THE PROPER GEAR. NORMALLY IT TAKES SO LONG THAT I HAVE TO PUSH DOWN ON THE GAS TO FORCE THE TRUCK TO SHIFT. IT DOES TO A LOWER GEAR WHICH MAKES IT JUMP FROM THE EXCESS POWER. AT HIGH SPEEDS, PRESSING ON THE GAS PEDAL IS NON RESPONSIVE AS THE TRANSMISSION CONTINUES TO LOOK FOR THE RIGHT GEAR. A MANUAL FIX FOR SAFETY PURPOSES (ESPECIALLY IN TRAFFIC AND NEED AN ANSWER FROM MY TRANSMISSION) IS TO CHANGE IT TO MANUAL SHIFTING WHERE I CONTROL THE GEARS. THIS IS A BAND AID FIX AT THE MOMENT AND IS QUITE INTERESTING THAT I AM ABLE TO SHIFT MY VEHICLE BETTER THAN A COMPUTER. PLEASE LOOK INTO THIS ISSUE. I AM GOING TO TAKE IT TO THE DEALERSHIP BUT AS I READ IN THE NUMEROUS REPORTS FROM OTHER 2015 CANYON OWNERS....GMC IS NOT ADMITTING OR DOES NOT HAVE A FIX. THIS ISSUE OCCURS ALL THE TIME SO SELECTING A DATE OF WHEN THIS ISSUE HAPPENED IS NOT EFFECTIVE.

WHILE DRIVING AT A STEADY SPEED, WHEN ATTEMPTING TO LIGHTLY OR MODERATELY ACCELERATE, A LACK OF POWER IS NOTICED DUE TO TORQUE CONVERTER LOCKUP. ENGINE COMES CLOSE TO STALLING OUT. IN MAY 2016, I WAS INFORMED GM ENGINEERING WAS AWARE OF THE PROBLEM WERE WORKING ON A SOLUTION. DURING A FOLLOWUP VISIT IN SEPTEMBER 2016, I WAS INFORMED THAT GM NO LONGER CONSIDERED IT A PROBLEM AND WERE NO LONGER WORKING ON A SOLUTION. GM TAC # 8-2110571583. THERE HAS NOT BEEN A SPECIFIC ACCIDENT RELATED TO A LACK OF ACCELERATION WHEN EXPECTING TO ACCELERATE, THERE REMAINS THE POTENTIAL ESPECIALLY WHEN MERGING INTO FREEWAY TRAFFIC DURING PEAK TRAVEL TIMES. THE GM DISTRICT SERVICE MGR DROVE THE TRUCK AND INFORMED ME THAT THERE WAS NO ISSUE AS HE DROVE THE SAME VEHICLE TYPE AND HAD THE SAME PERFORMANCE. PER RECENT GM MARKETING, THE 2017 GMC CANYON FEATURES A COMPLETELY RE-DESIGNED TRANSMISSION. I BELIEVE THIS ISSUE WITH THE TRANSMISSION IS A SAFETY ISSUE CAUSED BY A POORLY DESIGNED TRANSMISSION.

I WOULD JUST LIKE TO ADD MY TRUCK TO THE COMPLAINTS. I AM AT 24000KM ON MY CANYON AND THE TRANSMISSION STILL HASN'T LEARNED ANYTHING. THE TRANSMISSION PROBLEMS ARE THE EXACT SAME AS THE OTHER COMPLAINTS ON HERE. ITS HORRIBLE AND UNSAFE DRIVING THIS TRUCK EVERYDAY IN THE CITY. THIS ISSUE NEEDS TO BE TAKEN CARE OF BEFORE AN ACCIDENT DOES HAPPEN. ISSUE: TRANSMISSION PROGRAMING

VEHICLE UPSHIFTS TOO EARLY AT LOW SPEEDS REQUIRING ADDITIONAL ACCELERATOR INPUT THEN DOWNSHIFTS 2 GEARS TO COMPENSATE. THIS HAPPENS REGULARLY WHEN GOING AROUND 15-20 MILES AN HOUR UPHILL OR WHILE MAKING RIGHT TURNS WHILE VEHICLE IS IN MOTION. WHEN THE VEHICLE IS SEARCHING FOR THE CORRECT GEAR THE ACCELERATOR PEDAL IS NUMB FOR AT LEAST 2 SECONDS REQUIRING AT LEAST 90 PERCENT THROTTLE THEN IT FINALLY PICKS A LOW GEAR AND VIOLENTLY THROWS THE DRIVER AND PASSENGERS BACK AND ROARS TO LIFE. THE 2 OR MORE SECONDS OF HESITATION COULD BE VERY DANGEROUS IN AN EMERGENCY SITUATION WHEN QUICK ACCELERATION IS NEEDED. MY CONCERNS WERE VOICED TO BOWSER BUICK GMC ON 02/02/2015 DURING MY FIRST OIL CHANGE. THEY INFORMED ME THAT GMC IS WORKING ON PROGRAMMING FOR THE SIERRA RIGHT NOW AND WHEN IT'S SATISFACTORY, THEY WILL IMPLEMENT IT ON THE CANYONS. NO REPAIR ATTEMPTS WERE MADE TO ADDRESS THIS CONCERN. THEY REFUSED TO MAKE ANY REPAIRS AND SAID THAT I WAS ADDED TO A LIST OF OTHERS WITH SIMILAR COMPLAINTS.

VEHICLE UPSHIFTS TOO EARLY AT LOW SPEEDS REQUIRING ADDITIONAL ACCELERATOR INPUT THEN DOWNSHIFTS 2 GEARS TO COMPENSATE. THIS HAPPENS REGULARLY WHEN GOING AROUND 15-20 MILES AN HOUR UPHILL OR WHILE MAKING RIGHT TURNS WHILE VEHICLE IS IN MOTION. WHEN THE VEHICLE IS SEARCHING FOR THE CORRECT GEAR THE ACCELERATOR PEDAL IS NUMB FOR AT LEAST 2 SECONDS REQUIRING AT LEAST 90 PERCENT THROTTLE THEN IT FINALLY PICKS A LOW GEAR AND VIOLENTLY THROWS THE DRIVER AND PASSENGERS BACK AND ROARS TO LIFE. THE 2 OR MORE SECONDS OF HESITATION COULD BE VERY DANGEROUS IN AN EMERGENCY SITUATION WHEN QUICK ACCELERATION IS NEEDED. MY CONCERNS WERE VOICED TO BOWSER BUICK GMC ON 11/20/2015 DURING MY FIRST OIL CHANGE AND THEY PROVIDED ME WITH SERVICE BULLETIN #PIP5342 WHICH STATES "SHUDDER OR CHUGGLE WHEN ACCELERATING AT LOW SPEEDS OF 12-15 MPH IN SECOND GEAR IS NORMAL OPERATION OF THE AUTOMATIC TRANSMISSION AND THE TORQUE CONVERTER CLUTCH. NO REPAIR ATTEMPTS SHOULD BE ATTEMPTED TO ADDRESS THIS CONCERN" THEY REFUSED TO MAKE ANY REPAIRS AND SAID THAT I WAS ADDED TO A LIST OF OTHERS WITH SIMILAR COMPLAINTS.

HAVE 20000 MILES ON TRUCK AND TRANSMISSION STILL DOES ACCELERATE SMOOTHLY.THERE IS HESITATION WHILE TRANSMISSION FIND RIGHT GEAR.WHILE TOWING TRAVEL TRAILER TRANSMISSION WILL ACCELERATE BUT NOT DEACCELERATE TILL I REDUCE SPEED MANUALLY.VERY DANGEROUS.

TRANSMISSION DOES NOT SHIFT PROPERLY WILL NOT DOWN SHIFT HESITATING AND FEELS LIKE TRUCK IS MISFIRING RUFF SHIFTS CLUNKING SOUND PROBLEMS START AT ABOUT 20 MPH WHEN TRYING TO SPEED UP IN TRAFFIC TRUCK WILL NOT DOWN SHIFT OR WILL DOWNSHIFT TO VIOLENTLY CAUSING TRUCK TO LUNDGE FORWARD AND NEARLY REAR-END CAR IN FRONT THIS IS DANGEROUS AND COULD CAUSE AN ACCIDENT GM SEEMS TO BE IGNORING THIS PROBLEM EVEN THOUGH THERE SEEMS TO BE QUITE A FEW PEOPLE WITH THE SAME COMPLAINT

VEHICLE SHIFTING LAGS AND HESITATES THEN ENGAGES ABRUPTLY CAUSING UNSAFE ACCELERATION. SPECIFICALLY ENTERING AN ON-RAMP. WHEN TRYING TO MERGE INTO TRAFFIC FROM A SLOWER RAMP SPEED TO JOIN HIGHWAY SPEEDS THE VEHICLE STRUGGLES TO FIND THE PROPER GEAR. IN ORDER TO OFFSET THIS PROBLEM THE DRIVER NEEDS TO DEPRESS THE ACCELERATOR FURTHER TO HELP THE TRANSMISSION DOWNSHIFT TO A LOWER GEAR. HOWEVER, DOING SO WHILE THE TRANSMISSION IS SEARCHING FOR THE PROPER GEAR CAUSES THE VEHICLE TO SUDDENLY LURCH FORWARD WITH MORE FORCE AND ACCELERATION THEN IS REQUIRED OR SAFE. I HAVE BROUGHT MY TRUCK INTO THE DEALERSHIP TWICE FOR THIS ISSUE AND WAS TOLD THAT GM STATES THAT THIS IS THE NORMAL OPERATING CONDITIONS OF THE TRUCK. I FEEL THIS IS NOT AN ADEQUATE RESPONSE AND CERTAINLY DOES NOTHING TO ADDRESS THE SAFETY ISSUE OF A TRANSMISSION THAT DISENGAGES TO SEARCH FOR A PROPER GEAR AND THEN REENGAGES ABRUPTLY CAUSING THE DRIVER TO MAKE UNNECESSARY AND UNSAFE ADJUSTMENTS TO KEEP THE VEHICLE UNDER CONTROL.

TRANSMISSION DOES NOT DOWN SHIFT AT SPEEDS BETWEEN 27 MPH AND 40 MPH, AT 30 MPH YOU HAVE TO PUT PEDAL TO THE FLOOR THEN IT WILL SHIFT AND TACHOMETER GOES AROUND 4000 AND TAKES OFF LIKE A DRAGSTER .WATCH OUT FOR THE GUY IN FRONT OF YOU! NOW HIT THE BRAKES, REAL CUTE . DEALER TESTED SAID YES IT DOES IT BUT WE NEED A TSB BEFORE WE CAN DO ANYTHING CALLED GMC THEY SAID FILE A COMPLAINT WITH NHTSA THAT I THINK IS PRETTY CUTE ALSO $ 38000 AND YOUR TOLD TO FILE A COMPLAINT . @CARCOMPLAINTS.COM PEOPLE ALREADY THERE COMPLAINING ALSO [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).' *JB