2015 GMC Canyon

THE TRUCK CHUGS AND HESITATES RANDOMLY WHEN A DOWN SHIFT IS REQUIRED. GENERALLY THIS RANDOM HESITATION IS JUST ANNOYING. AT TIMES THE VEHICLE WILL NOT DOWNSHIFT FOR A CONSIDERABLE TIME. WHEN MAKING MANEUVERS IN AND AROUND TRAFFIC THE TRUCKS POOR SHIFTING CAUSES THE TRUCK TO JERK AND NOT ACCELERATE. WHEN THE TRUCK WILL EVENTUALLY DOES DOWN SHIFT THE GAS PEDAL MUST BE ALL THE WAY AT THE FLOOR AND ACCELERATES AT FULL SPEED. BULLETIN PIP5342A SUPPOSEDLY ADDRESSES THE CONCERN BUT SAYS IT IS NORMAL. GM TELLS THE DEALER NOT TO ATTEMPT TO FIX. I HAVE HAD MULTIPLE TIMES WHERE THIS PROBLEM HAS PUT ME AT RISK FOR AN ACCIDENT.

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.

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.

I PURCHASED THIS TRUCK 3 MONTHS AGO AND IT HAD AROUND 9000 MILES ON IT AT THE TIME OF THE INCIDENT. I WAS DRIVING AT AROUND 25 MPH WHEN I NOTICED SMOKE COMING FROM UNDER MY HOOD. I PULLED OVER, SHUT THE ENGINE OFF, AND POPPED THE HOOD. I OPENED THE HOOD AND NOTICED THE ENGINE WAS ON FIRE. OPENING THE HOOD JUST ENRAGED IT MORE. I SLAMMED THE HOOD SHUT, AND GOT TO A SAFE DISTANCE AND CALLED 911. WITHIN MINUTES THE TRUCK WAS ENGULFED IN FLAMES. AFTER THE FIRE WAS PUT OUT, THE FIREMEN SAID IT APPEARED TO HAVE STARTED IN THE VICINITY OF THE ALTERNATOR. THE BRACKET WAS MELTED OFF AND ALL THAT WAS LEFT OF THE ALTERNATOR WAS A BASKET OF COPPER. EVERYTHING MINUS THE BED WAS ON FIRE.

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

I WANTED TO REACH OUT TO YOU ON GMC'S CLAIM THAT THEIR ENGINE ACHIEVES 305 HORSEPOWER. WHILE IT MAY BE TRUE THAT THEIR ENGINE ACHIEVES THIS FIGURE IT DOES SO AT A STATED 6800 RPM. THE 6800 FIGURE IS IMPORTANT TO NOTE BECAUSE THE TRUCKS? RED LINE INDICATING POTENTIAL DANGEROUS OPERATING CONDITIONS START AT 6500 RPM. SO IN ESSENCE IN ORDER FOR AN OWNER TO ACHIEVE 305 HP THEY WOULD HAVE TO BE OPERATING THEIR TRUCK IN A POTENTIALLY DANGEROUS MANNER. EVEN IN THE 2015 COLORADO OWNER?S MANUAL IT INDICATES THE DANGER OF OPERATING ABOVE THE REDLINE? ?DO NOT OPERATE THE ENGINE WITH THE RPM?S IN THE WARNING AREA.? GM IS STATING THAT SOMEONE CAN ACHIEVE MAXIMUM HP ONLY BY OPERATING THE VEHICLE IN A DANGEROUS MANNER....REALLY?! I BELIEVE IT WILL ONLY BE FAIR FOR GMC TO RE-EVALUATE THEIR MAXIMUM HORSEPOWER PRIOR TO THEIR ENGINE HITTING THE REDLINE. *TR