2017 GMC Yukon Engine Problems

My engine starting making a knocking/ticking noise out of no where. I was traveling alone on the highway so I stopped to check it. I got to a gas station and google searched it and it came up that the LS 6.2 engine that is in my vehicle was recalled on other models because of this issue. I did have a mechanic look at it as well and he agreed it is that same issue that was recalled in other models.

My truck lost power while I was driving. Took to a shop and they found that a had a bad lifter. I have all of my service records from the GMC dealership where I had my vehicle serviced on a regular basis.

Sitting at stop light engine began running rough and smoke coming out. CEL came on and began flashing, pulled over and had it towed. Diagnosis was PO300 misfire, dead miss on cylcinder 4, cylinder plug 4 is fuel fouled, cois is fine has good spark- caused by failed lifters. Needs engine replacement. Vehicle always serviced, garage kept and in mint condition with 89K miles.

Full engine failure

The contact owns a 2017 GMC Yukon. The contact stated upon starting the vehicle, and while driving at various speeds, there was an abnormal ticking sound coming from the engine. There was no warning light illuminated. The contact stated that the abnormal ticking sound had gotten louder. The vehicle was taken to the dealer, and to several independent mechanics; however, the cause of the failure could not be determined. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 181,000.

High pressure fuel pump regulator failed and cause gas leaking, reduced engine power and gas smell coming back in vehicle. It was also blowing out white smoke. It had delayed ignition starting. The engine light did come on. Several makes and models of GMC has had recalls for this problem. The 2017 GMC Yukon was not included for this recall and should have been.

Lifters failed

Engine blew at less than 80,000 miles

Not even 100,000 miles on it and the engine blew. Started with a lifter issue. Everyone I talk to with Yukons and GMC in general say it’s a problem. Just a search on the internet shows that they all have this issue… a well maintained car should not have this issue and it’s clearly a GMC issue and it needs to be fixed. The repair shop can’t even order me a new engine due to this being a real problem all over with GMC.

I started noticing issues with my transmission around 55,000 miles on it. It first started with no noticing that it wouldn’t gear down when it needed to, and then when it finally did gear down, it would really jerk the vehicle. I started calling GMC then and questioning and putting in a claim. Just went back-and-forth four months. Now it was getting worse to where I could feel the transmission slipping it wouldn’t kick into upper gear or lower gear. Again, I was still calling GMC and reporting these issues. I was told to take it and have a transmission oil change, which I did costing me $300. I still noticed this problem and I continue to call. I kept being told that they would have somebody call me back which nobody ever called me back to find out specifics. I took it to a GMC garage have them put it on a machine, and I was told that it needed a new transmission and this wasn’t something GMC was covering. This new transmission cost me $6200 and was done on 1/5/25. Please remember this vehicle only had 64,000 miles on it, which is absolutely ridiculous to need a transmission at this mileage. I again had called in January 2025 reporting this and was told someone would call me back and never heard from them.

the lifter is stuck an making a clicking noise an where on the high an truck cut off let it set for a minute then it crank by up an drove to a shop an they said it was a lifter stuck sounded like number 2 lifter this needs to be covered by gmc as a recall.

Engine Failure while driving, almost causing me to wreck on the highway.

Lifters failed 2nd time at 130k miles. Driving on highway at 70mph cruise and engine went to limp mode. Multiple repairs. $5,000. Dealer sold it to me in 2020 with 80k miles and did not disclose prior lifter replacement. I know they did something as a head bolt is missing.

The engine light has come on spuradically for the last 1.5 years and has been consistently on since May of 2023. This starting approx. 95,000 miles. During this time after starting the Yukon it is chuggy and missing, as I drive off it jerks and darts forward. Seems to be when I stop and start to go this happens, again engine light is always on...sometimes flashing. Starting 9/19/23 (106,000 miles) when slowing down to turn into a parking lot the engine revved high, no movement with the touch of the gas pedal and suddenly takes off with a jerk and a squeal of the tires. VERY SCARY. Since then I have experienced this DAILY, at least once a day. So far it is when I am going slow, either taking off and accelerating or slowing down. The engine and RPMS rev up and go high with no way of moving when touching the gas pedal then suddenly jerks and takes off with the tires squealing. I am also experiencing the transmission shifting VERY hard, mainly when slowing down. I am feeling very timid and scared to drive this vehicle...this is a seriously dangerous situation and can cause a serious accident or life! I believe this fits into the description of the GM Class Action Lawsuit filed over transmission problems. When I previously talked to the dealership they kept saying that there was no recall for the problems and to bring it in. I am not going to continue to get things fixed that do not fix this problem, as I have already. I know of a friend who has the same vehicle/year only a Tahoe and is experiencing the same problem and had work done at a dealership with no fix for their issue neither. Something has to happen with this problem from GM! The contact stated the issue has gotten worse pushing down the gas pedal rendering the vehicle immobile, then all of a sudden it jerks and shifts into gear jolting the vehicle forward.

service brake assist light, needed to press brake pedal harder to stop, a ticking noise coming from engine compartment.

OUR VEHICLE IS 2017 AND WE HAVE TO REPLACE THE AIR CONDITIONING CONDENSER. I'VE READ THAT THIS A ISSUE WITH THESE VEHICLES AND IT IS VERY EXPENSIVE TO REPAIR. THIS PROBLEM. THERE SHOULD BE A RECALL IN PLACE. WE AS CONSUMERS SHOULD NOT HAVE TO PAY FOR THE NEGLECT OF GMC NOT PROPERLY BUILDING THIS VEHICLE.

Transmission, radio is skipping, brakes

The contact owns a 2017 GMC Yukon. The contact stated that the lifters were previously replaced in 2021 at the manufacturer's expense. Additionally, the contact stated that while driving at various speeds, the engine was running rough. The vehicle was taken to an unknown auto part store, where it was diagnosed with an engine cylinder malfunction. The vehicle was taken to an independent mechanic, where it was determined that the engine had experienced lifter failure or a more severe failure. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the vehicle needed to be diagnosed by the dealer, and that the manufacturer might help in covering the cost of the repair. The contact related the failure to NHTSA Action Number: EA25007 (Engine, Engine and Engine Cooling). The failure mileage was approximately 81,638.

VEHICLE HAS A ROUGH IDLE AT COLD START. ALSO MISFIRES AT STOPLIGHTS AND RANDOM TIMES. VEHICLE STALLED ONCE THIS MORNING COMPLETELY. TOLD BY MY GMC DEALERSHIP THIS IS A COMMON PROBLEM AND I WOULD HAVE TO REPLACE ALL FUEL INJECTORS FOR OVER $2,000. I JUST PURCHASED THIS VEHICLE IN MARCH. THE FUEL INJECTORS ARE ON BACK-ORDER CURRENTLY SO I AM UNABLE TO HAVE IT REPAIRED. I WAS TOLD ANOTHER VEHICLE LIKE MINE AT THAT SERVICE CENTER HAS BEEN WAITING ALREADY FOR 6 WEEKS FOR FUEL INJECTORS AND THAT I WOULD HAVE TO WAIT AT LEAST ANOTHER MONTH. THIS MEANS I WILL NOT BE ABLE TO REGISTER MY VEHICLE WITH MY STATE AS IT WILL NOT PASS SMOG INSPECTION WITH A CHECK ENGINE LIGHT. I HAVE BEEN UNABLE TO REGISTER IT DUE TO THE DMV CLOSURE FROM COVID-19. ITS VERY DANGEROUS TO DRIVE A VEHICLE THAT CAN STALL AT ANY MOMENT AND IS IMPOSSIBLE TO FIX WITHOUT WAITING FOR PARTS. THESE PARTS ARE OBVIOUSLY ON BACK-ORDER SO LONG BECAUSE THIS IS A WIDESPREAD PROBLEM. I FOUND A SERVICE BULLETIN FROM NHTSA ( DCS5097 ) WHICH COVERS MY PROBLEM EXACTLY. BUT FOR SOME UNKNOWN REASON, SPECIAL COVERAGE ONLY APPLIES TO 13 STATES. I BELIEVE THIS IS A MUCH MORE WIDESPREAD PROBLEM THAN THOUGHT AND I BELIEVE MY SAFETY AND THE SAFETY OF THOSE AROUND ME IS AT RISK IF I DRIVE THIS VEHICLE. MY VEHICLE AND THOSE LIKE MINE SHOULD BE COVERED BY SPECIAL COVERAGE AS WELL. AND AT THE VERY LEAST THE PARTS TO FIX THIS SHOULD BE AVAILABLE GIVEN THAT ITS BEEN A KNOWN ISSUE NOW FOR WELL OVER A YEAR. THESE PARTS HAVE BEEN BACK-ORDERED WAY BEFORE COVID-19 EVEN HIT, SO IT CANNOT BE ATTRIBUTED TO THAT. GM HAS AN OBLIGATION TO KEEP THEIR VEHICLES ON THE ROAD SAFE AND MAINTAINED TO THE BEST OF THEIR ABILITY AND WHEN IT COMES TO THIS ISSUE THEY ARE FAILING TO DO SO. *TR

CHECK ENGINE LIGHT CAME ON AND FLASHING, STABILITRACK LIGHT COMES ON, VEHICLE IDLES ROUGH AND EVENTUALLY STALLED OUT. THIS HAS HAPPENED TO ME TWICE IN MY 2017 GMC YUKON. ONCE AT ~53K MILES, AGAIN AT ~64K MILES. ONE TIME IT STALLED ON THE SIDE OF THE ROAD WITH MY KIDS IN THE VEHICLE WITH ME LATE AT NIGHT ON VACATION AND HAD TO BE TOWED IN THE MIDDLE OF THE NIGHT AND WE HAD TO STAY IN A HOTEL OUT OF TOWN UNEXPECTEDLY. THE 2ND TIME HAPPENED CLOSER TO HOME BUT HAD TO PAY FOR A RENTAL CAR SINCE THIS IS MY ONLY VEHICLE AND THE DEALERSHIP NO LONGER DOES LOANERS. THE VEHICLE RUNS ROUGH WHILE DRIVING, LOSES POWER, AND SEEMS TO LOSE CONTROL. IT IS VERY SCARY WHEN IT HAPPENS. HAPPENED IN OCT 2019 AND AGAIN JULY 2020. IT IS THE SAME ISSUE AS DESCRIBED IN N182198000 SPECIAL COVERAGE MEMO (DCS5097) FROM JULY 26, 2019 BUT ISN'T COVERED IN MY STATE YET APPARENTLY.