Power Train owner reports: Chevrolet Tahoe years in the records

The records describe a problem worth checking before purchase.

“The contact owns a 2017 Chevrolet Tahoe. The contact stated that while driving approximately 15 MPH uphill in the mountains, the transmission started slipping, followed by a loud banging sound. The contact stated that later, while fishing, there was an abnormal metallic sound like BBs hitting a tin can coming from the vehicle. The contact stated that previously, while driving at an undisclosed speed, the vehicle lunged forward, followed by grinding and banging sounds. There was no indication of a fluid leak coming from the vehicle. The contact stated that shortly afterwards, the vehicle stalled. The vehicle was restarted and resumed normal operation. No warning lights were illuminated. An unrelated warning light for the oxygen sensor was illuminated. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was contacted and informed that there was no recall coverage or assistance available for the vehicle. The manufacturer referred the owner to the NHTSA Hotline for assistance. The failure mileage was approximately 181,000.”

The records describe a problem worth checking before purchase.

“My 2017 Chevrolet Tahoe equipped with a 6L80 transmission began experiencing transmission-related drivability issues at approximately 130,000 miles. The vehicle jerked on takeoff, had delayed/slow shifting, produced a whining noise, and later had intermittent shuddering/surging while driving. During service, metallic debris/shavings were found in the transmission fluid. The transmission ultimately required replacement at my expense. I am aware of GM Technical Service Bulletin 20-NA-142, “Shudder/Surging While Driving,” which includes 2015–2022 Chevrolet Tahoe models equipped with MYC/MYD transmissions and discusses conditions that may be identified as torque converter shudder. My vehicle’s 6L80 transmission corresponds with GM RPO MYC, and the symptoms/repair findings appeared consistent with the bulletin. I am filing this complaint to document the transmission failure and related safety concern, as the jerking, delayed shifting, and shuddering affected normal vehicle operation.”

The records describe a problem worth checking before purchase.

“My 2017 Chevrolet Tahoe LT 4WD with a 5.3L engine experienced sudden drivability issues related to confirmed AFM lifter failure, including severe engine misfires (P0300), rough idle, shaking at stoplights, and significant loss of power while driving uphill and under load. The vehicle has approximately 140,000 miles and has been consistently maintained through Chevrolet dealerships. The condition has been diagnosed by Premier Chevrolet of Carlsbad. The engine experienced loss of power during operation, creating a potential safety concern when accelerating or driving in traffic conditions requiring consistent engine power. This issue appears related to widely documented AFM lifter failures on GM 5.3L engines.”

The records describe a problem worth checking before purchase.

“The contact owns a 2017 Chevrolet Tahoe. The contact stated that while driving on the highway at 70 MPH, the vehicle lost automotive power. There was no warning light illuminated. The contact was forced to pull over and had the vehicle towed to a local independent mechanic where the vehicle was diagnosed, and the contact was advised that the transmission was faulty and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 128,000.”

The records describe a problem worth checking before purchase.

“The transmission dropped 2 thousand miles over my warranty at 102k miles. I was taking my son to see his surgeon and the car started jerking and making noises in the middle of a busy intersection. We almost got hit several times trying to get it to the side of the road for safety. I had to pay almost $1800 to get it towed home (we were in Peoria about 150 miles from home to see his doctor). There were no indications the transmission was going out and never should have at that mileage. I always do regular maintenance and keep all my receipts. I then paid 6k out of pocket to have it replaced with a better transmission since I learned GM put a bad transmission in the Tahoe I have (I was told I missed the time limit to have it fixed on their dime). Then 6 weeks later a fuel injector and the lifters failed due to the active fuel management. No one was hurt thankfully because I was just leaving home to go to work when I noticed the tapping sound and had my mechanic come look at it. Him and 2 other mechanics confirmed it was the lifters. I had already borrowed money to replace the transmission and can’t afford the $12k quote to fix it. Now it has been sitting in my driveway for almost a year unable to be driven. It is however causing me severe depression. I’m borrowing my son’s car while paying almost $700 monthly on a Tahoe I can’t even drive. I was even more sad when I found out there’s thousands of people with the same issue. GM should be ashamed of themselves!”