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.
2021 GMC Yukon XL engine complaints
Page 7 of 7: complaints 161 to 166 of 166, newest first, as owners wrote them.
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 traveling on the highway and the vehicle started to jolt, sputter and speed acceleration was reduced in a highly congested area with little room to maneuver. I had to quickly shift lanes and get off at the first exit I could as I figure out what the issue was. I immediately contacted my Dealership and they were able to get me an emergency appointment so my vehicle could be inspected that day. After the Dealers analysis they said that a lifter needed to be replaced. I have a brand new vehicle with less than 8,611 miles on it. The lifter issue puzzled me so I went to the GMC Yukon message and sure enough there are ALOT of 2021 Yukon/Tahoe owners that have had this exact same issue with even worse stories than mine.
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.
Our vehicle had a warning light of traction system not working - we were told to take to nearest dealer that springs with the valves were faulty and lifters not working. Took it to Everett in Benton, AR. Took two weeks to get the parts to fix. Told this was a problem. We had 4000 miles on the vehicle. Yesterday, it happened again. Told by Cowboy in Heber Springs, AR where we bought the vehicle they had six in their shop with same problem. They advised that our vehicle would have to be towed. GMC does not think it is a safety issue but it is - the vehicle slows down and there is little power to drive. Yesterday I was pulling a bass boat and only made it home with great difficulty. This problem that seems to be prevalent with all the 2021 Denalis needs to be investigated before someone gets hurt or killed. First incident was May 2, 2021 and second (after allegedly being fixed) was June 23, 2021.
With only 52 miles (2-days old), I was driving home when I heard a knock. Then the engine light came on and the vehicle stability control lowered the vehicle and the vehicle shut off. I was left in the middle of traffic unable to move the vehicle to a safe location. Neutral would not work either. When the vehicle was towed to the gmc dealership, they knew exactly what was wrong with the car, broken springs in the engine. Apparently they sent a notice stating that the engine springs were breaking and needed to be replaced. The dealership only offered to replace the 2 broken springs, not all of them since my vehicle was built after the date noted for having issues. They would not provide me with any paperwork about the service. I'm not sure how this company can get away with selling vehicles they know have issues with faulty parts.
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