Car shakes in drive, car shakes when accelerating, transmission issues, rear differential had to be replaced.
2021 GMC Yukon XL transmission complaints
Page 3 of 3: complaints 41 to 49 of 49, newest first, as owners wrote them.
The contact owns a 2021 GMC Yukon. The contact stated that while driving at an undisclosed speed, the transmission warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired and remained at the local dealer for further investigation. Upon further investigation, the contact related the failure to the federal safety agency Campaign Number: 24V839000 (Power Train); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 63,000.
We purchased a new 2021 GMC Yukon Denali in July 2021.We have had continuous issues with the truck starting almost immediately after we purchased it and ending with a catastrophic engine failure despite only have ~81,000 miles on it. Even more concerning is that the engine failed while my two of my children were driving with 3 of their friends. The car seized up in the middle of a busy road while driving 55 mph. The kids had to coast to the side of a busy road where they exited the vehicle and waited for a tow truck. Despite regular oil changes and maintenance, we have experienced non-stop problems with the truck * Aug 2022 (29,470 miles): Engine wire chaffing relating to the fuel pressure sensor. Transmission slipping. * Oct 2022 (34,220 miles): “Grinding noises” related to brakes. Faulty brake sensor and brake replacement. * Nov 2022 (35,954 miles): Continued “grinding noises” * May 2023 (51,163 miles): Continued “grinding noises” which were again “shrugged off” by the dealership despite us bringing in the truck for the 3rd time related to this issue. Transmission slipping (transmission torn down, clutch assembly replaced, etc.) * Oct 2023 (62,365 miles): Continued “grinding noises” (4th time bringing the truck in for this reason). * Sep 2024 (81,000 miles): Catastrophic engine failure while driving on a busy road at 55 mph. Based on discussions with a wide range of mechanics, dealerships, shops, individuals within the automative industry, we have come to understand that the issues we have been facing with our truck are not unique. To be clear, we have experienced: i) the same problem repeatedly over a short period of time; ii) repeated unsuccessful attempts to fix the same issues; iii) a prolonged period for repairs where we did not have the vehicle; and iv) significant value loss due to catastrophic engine failure. Further, these problems compromised the safety of my family and has significantly disrupted our life.
Engine is consuming 3qt oil every 1,000 miles. Has been consuming oil since 34,000 mile mark and the transmission has been slipping where it revs very high before downshifting. GM has asked for an oil consumption test to be done and now we are 9,000 plus miles into it and they still say it's fine. This car is not worth the price. I can't even take it out of town due to needing the oil consumption every thousand miles by GM request. Complained about engine knocking at 22,000 miles and they said it was normal and I know it's not
The contact owns a 2021 GMC Yukon XL Denali. The contact stated that while driving at 70 MPH, the transmission unexpectedly downshifted into neutral (N). The vehicle was taken to the dealer, where a test drive was performed and the failure recurred. The vehicle was towed back to the dealer, where it was diagnosed with internal engine failure and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 35,204.Â
GM has consistently failed to deliver safe and reliable vehicles to the american public. I purchased a 2021 GMC Yukon Denali XL and the transmission needs to be replaced completely after the valve body was already replaced once. This issue proves to me that GM is not a reliable and trustworthy brand, with poor business ethics and a track record of having to be bailed out by our very own government for low quality vehicles. I am asking for the Federal department to investigate thoroughly and recall all transmissions that could negatively impact american families. These vehicles are not affordable for the average household and the quality of workmanship does not match the price point. Please find attached a document from GM directly that covers all recalls and previous repairs done to my vehicle. I am now fighting to get my down payment refunded as well as the payments that I have made on my vehicle.
The contact owns a 2021 GMC Yukon XL. The contact stated while stopped in traffic, the contact felt the vehicle shaking. The contact stated that the vehicle stalled and lost motive power. After several attempts, the contact was able to restart the vehicle and shifted into neutral(N) to move the vehicle to the side of the roadway to safety. The contact stated that the vehicle was running rough before losing motive power and stalling. The contact was unable to restart the vehicle. The vehicle was towed to the dealer and fuel pump was replaced. The manufacturer was not contacted. The failure mileage was 15,658.
While traveling at highway speeds, the vehicle suddenly and without warning lost power. All gauges remained in the normal range. After pulling on to the shoulder of a highway and turning the vehicle off, the vehicle would not start. After being towed the dealership, the vehicle would not power up. Dealership checked DTCS and found code P0016 Crankshaft Position Sensor and Intake/Single Camshaft Position Sensor Correlation. Dealership inspected wiring for chaffing and tested camshaft position sensor circuitry and all found in normal condition. Dealership followed document ID: 5646662 diagnostic procedure inspecting camshaft position sensor and camshaft actuator solenoid valve for incorrect installation or damage. While inspecting, dealership found internal engine bearing material in oil indicating internal mechanical failure. Dealership removed engine oil pan and #1 and #2 connecting rods and found bearings spun causing catastrophic engine failure. Crankshaft main bearing cap #3 also found discolored from extreme heat. Dealership then followed bulletin #22-NA-074 for replacement of engine oil, cooler lines and engine oil cooler after connecting rod and main bearing damage The vehicle only had 17,067 miles.
I was driving 30 mph when the car went into neutral and rolled to a stop. When I put on the brakes the engine shut off and it went into park. It would not restart or shift out of park . I was stuck in an active busy road. The car was towed to the dealer. They said it was a problem with the BCM. GMC had put out a bullletin which was to reprogram the BCM. My concern is that if this had happened on a busy interstate in traffic at highway speeds the results could have been fatal.
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