2016 GMC Canyon Engine Problems

At approximately 92k miles the diesel High Pressure Fuel Pump (HPFP) failed, all internal seals were disintegrated (technician's verbage). This is apparently a common problem (but no recall was ever issued), which can lead to premature engine failure due to sending foreign material into the engine. This pump was replaced, however the new pump failed, after 2 days, and required replacement again, May 2023. The total cost for this was $6200. At 100,450 miles my engine blew up while driving, 01 Feb 2024. There is a very good chance that when the HPFP pump had failed, 10 months earlier, it in fact send foreign material into the engines cylinders which might have led up to this catastrophic failure. Fortunately, I was on a rural street travelling at about 20 miles an hour, and not on the highway travelling at 70 miles an hour, like I was 10 minutes before this happened. When the engine blew it sent pieces of cast iron flying out the bottom of the truck, on a highway this could have seriously damaged vehicles travelling behind me. When it blew I also lost all 'propulsion', the truck immediately began coasting to a stop, had this happened at high speeds it would have been extremely dangerous because without the engine running the brakes lose pressure, plus the oil leaking out could have caused a loss of traction. From what I have found, while researching online, these 2.8l diesel engines have a fairly high failure rate (often being referred to as "a bomb just waiting to explode"), especially the HPFP, which might be part of the reason the General Motors discontinued using this engine in 2022. I feel that a recall should be done on all current 2.8l Duramax engines to do a complete inspection and replace all suspect components, as well as to reimburse those of us who were placed in harms way when our engines blew up on the road, due to GM's neglect.

1 inch section of magnetic strip GLUED to outer rim of reluctor rim broke off. For an item that sees such a high rate of speed, gluing anything to the outside is piss poor engineering.

Alert for emissions control malfunction.

WHEN TRYING TO ACCELERATE VEHICLE STUDDERS AND HAS NO POWER UNTIL MORE GAS IS APPLIED. VEHICLE CHANGES GEARS WAY TO FAST CAUSING YOU TO HAVE TO APPLY MORE ACCELERATION. VEHICLE DOESN'T DOWNSHIFT CAUSING YOU TO ALSO HAVE TO APPLY MORE ACCELERATION TO GAIN SPEED. SERIOUS SAFETY HAZARD. *TR

TL* THE CONTACT OWNS A 2016 GMC CANYON. WHILE DRIVING 65 MPH, THE RPM METER INCREASED FROM 1,000 TO 4,000 AND THE VEHICLE FAILED TO DECELERATE OR ACCELERATE. THE VEHICLE SLOWED DOWN AFTER BEING SHIFTED INTO NEUTRAL AND WAS ABLE TO FUNCTION PROPERLY. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO DIAMOND HILLS CHEVROLET BUICK GMC (4545 W RAMSEY ST, BANNING, CA 92220, (866) 220-9099), BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND ADVISED THE CONTACT TO TAKE THE VEHICLE BACK TO THE DEALER FOR DIAGNOSTIC TESTING. THE FAILURE MILEAGE WAS 22,000. *TT CONSUMER STATED I SPOKE WITH TIFFANY AT GMC. SHE INFORMED ME THAT THEY WOULD DO NOTHING AND ANY FURTHER TESTS WOULD BE AT MY EXPENSE. THE FIRST TIME IT HAPPENED IT WAS A VERY DANGEROUS SITUATION. I HAD JUST PASSED A CAR ON A 2 LANE HWY (CA 395) WHEN THE ENGINE FROZE. THE CAR I PASSED HAD TO APPLY ITS BRAKES TO KEEP FROM HITTING ME. UPDATED 10/19/18*JB

I PURCHASED A GM 2016 CANYON IN OCTOBER, 2016 AND HAD DRIVEN IT NEARLY SIX MONTHS WHEN THE EVENT DECRIBED HERE OCCURRED. UP UNTIL APRIL 16, 2017, I HAD HAD NO PROBLEMS WITH THE TRUCK. HOWEVER, ON EASTER SUNDAY AFTERNOON, WHILE ATTEMPTING TO SLOW MY CANYON DOWN AND PREPARING TO STOP AT A STOP LIGHT, THE ENGINE SEEMED TO GO FORWARD OF IT'S OWN VOLITION AND THE TRUCK DID NOT RESPOND TO MY EFFORTS TO BRING IT TO A COMPLETE STOP. CONSEQUENTLY, MY VEHICLE STRUCK THE VEHICLE IMMEDIATELY IN FRONT OF IT. A SUBSEQUENT INTERNET SEARCH REVEALED THAT A TECHNICAL SAFETY BULLETIN ISSUED BY GM IN SEPTEMBER OF 2016 DESCRIBED THIS EVENT AS HAVING OCCURRED TO 2016 CANYON DIESEL ENGINES. MY VEHICLE HAS A GASOLINE ENGINE; NONETHELESS THE CONDITION WAS DESCRIBED IN THE BULLETIN (TSB 16-NA-276) AS: "SOME CUSTOMERS MAY COMMENT ON A SHUDDER AT LOW SPEEDS, AN IDLE SURGE WHEN STOPPED OR APPROACHING A STOP." THIS IDLE SURGE DESCRIBES EXACTLY WHAT HAPPENED TO MY VEHICLE AS I WAS ATTEMPTING TO SLOW DOWN AND STOP AT A RED LIGHT. ALTHOUGH THERE WAS NO DAMAGE DONE TO MY VEHICLE, THE OFFICER WHO INVESTIGATED THE ACCIDENT WOULD NOT LET US DRIVE OUR VEHICLE UNTIL IT HAD BEEN EXAMINED AND EVALUATED BY OUR LOCAL GM SERVICE DEPARTMENT. THE SERVICE PERSONNEL ADAMANTLY MAINTAINED THEN (AND NOW) THAT THE ACCIDENT DID NOT HAPPEN AS I DESCRIBED IT. I HAD TO CONTACT GMC CUSTOMER CARE CENTER TO HAVE 15 MINUTES WORTH OF DIAGNOSTICS DONE PER COMPUTER, ESP THE ENGINE CONTROL MODULE. THE TSB STATES: "IF YOU ENCOUNTER A VEHICLE WITH THE ABOVE CONCERN, REPROGRAM THE ENGINE CONTROL MODULE WITH THE LATEST CALIBRATIONS." LUCKILY, THE GENTLEMAN AT THE CUSTOMER CARE SERVICE WAS ABLE TO INTERVENE AND HAVE THE ENGINE CONTROL MODULE EVALUATED AND DOCUMENTATION THAT THERE WERE NO PROBLEMS WITH IT OR ANY OTHER "CONTROL MODULES" PROVIDED TO US BY OUR LOCAL GM SERVICE DEPARTMENT.

I PURCHASED A 2016 GMC CANYON IN JULY 2016. I NOTICED HESITATION WHEN I ACCELERATE, ESPECIALLY WHEN IN TRAFFIC, GOING UPHILL OR ROUNDING CORNER. I RESEARCHED MANY FORUMS AND FOUND THE TRANSMISSION HAS A LEARNING PERIOD WHERE IT DOES THIS AND ADAPTS TO YOUR DRIVING, NORMALLY WITHIN THE FIRST 1000 MILES. HOWEVER, IT HAS BEEN 13,000 MILES LATER AND ALMOST A YEAR, AND IT CONTINUES TO HAVE THIS HESITATION AS BAD IF NOT WORSE THAN IT DID INITIALLY. GMC HAS CHECKED IT OUT, GAVE IT A TEST DRIVE AND SAID IT SHOWS NO CODES SO THEY OFFER NO HELP. ALL OF MY PASSENGERS NOTICE THIS HESITATION WHEN IT HAPPENS. THE BEST WAY TO DESCRIBE THIS HESITATION IS WHEN YOU PUSH THE GAS, THE TRUCK ACTS LIKE IT DOESN'T WANT TO GO AND IT BECOMES SHAKEY. IN SITUATIONS WHERE I'M MERGING ONTO TRAFFIC, THIS COULD BE DANGEROUS, AS I HAVE HAD TO FLOOR IT TO MAKE IT ACCELERATE. FOR A NEW VEHICLE, THIS IS UNACCEPTABLE AND I FELT SAFER IN MY 2001 SIERRA THAN I DO IN THIS. THE FACT THAT GMC WILL NOT OFFER ANY WAY TO FIX THIS ADDS TO THE FRUSTRATION. NO MATTER WHAT THEY SAY, IT IS NOT NORMAL FOR A VEHICLE TO DO THIS.