2015 CHEVROLET TAHOE Complaints

The torque converters for the 2015 Chevy Tahoe’s or the 6L80 transmission are failing at a rate not seem on a newer vehicle. Chevy dealerships in my area are backed up for 2 to 3 weeks just to look at the possible problem. The failure appears to be due to poor design of the transmission torque converters. Safety is at risk due high failure rate that could occur at highway speeds and thus making the vehicle stop without brake lights and possible fail in the middle of the highway. At highway speeds this failure could cause serious damage and possible death. Due to the 2 to 3 weeks for the transmission to be looked at by Chevy, I chose to take my vehicle to a private repair shop. Prior taking my vehicle to the shop the shop knew based on the high failure rate that my transmission failure was based on the torque converter but the total damage was not known until the transmission was rebuilt. The transmission torque converter problem was reproduced and confirmed by an independent service center. The Transmission was inspected by AAAA transmission located in Fort Worth. The only warning I had of the failure of the transmission torque converter was accelerating to access the highway and the vehicle started to lose power and shutter due to the lack of acceleration. The luck for me was the highway was not crowded and I did not merge on the highway with the loss of power and possibly getting hit from behind by another vehicle. There were no warning signs of the failure the vehicle just started showing signs of the failure that day. The failure first appeared on June 30, 2023. Attached is the copy of the repair bill and pictures of the metal shavings due to the failure of the torque converter which destroyed the transmission pump. The shavings are steel and aluminum particles.

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving at a slow speed and while making a left turn into traffic, the power steering assist malfunctioned and the steering wheel became difficult to turn, causing the vehicle to erroneously drive into a busy intersection. The cause of the failure was not yet determined. The local dealer and manufacturer were not notified of the failure. The failure mileage was 108,000.

I have not had a wreck but the fact that when you press the brake pedal the dome lights blink and when you turn on the left turn signal, the dome lights blink. If you hold down the brake like if you’re at a traffic light the dome lights blink continuously until you let off the brake. Now, during the day, that’s no big problem but at night it poses a serious safety risk. A bright light in your eyes while driving is blinding and a sudden bright light in the pitch black dark could lead to an accident. I called the dealer to ask about it and was told yeah, they knew about it and it would cost me like $550 to repair even though it was a defect that they readily acknowledge.

While driving I periodically receive a notification on the dash to "Service Trailer Brake System". The message just randomly comes up with an abrupt warning noise which is a distraction and startles you until it goes away. I don't tow anything with the vehicle. The notification happens about once a month when driving and eventually goes away after a few minutes. I do mostly interstate driving and when the warning comes up, it startles you and you feel the need to pull over immediately. The notification noise is loud and a distraction. I will be taking it to a Chevrolet dealership. I have an appointment late August. This has been going on periodically for months.

In approximately December of 2015, we purchased a 2015 Chevy Tahoe LT from CARR Chevrolet. We chose GM for the reputation, under the belief if we took care of our vehicle and had it maintained by the dealer, it would last 12-15 years. This was NOT our experience.Three years after we purchased the vehicle, the engine died. We were assured this was an anomaly and GM replaced at "no cost", as it was a "manufacturing error". CARR service convinced me it was “great”, as now my vehicle would last even longer. I did not question and blindly trusted those I viewed as trained, skilled professionals. Fast forward to present time, my vehicle is 7 years old (90,000 mi) and never missed a single service. Out of the blue, the transmission dies. I was initially told this is “normal" and “happens” to a tune of $8400 plus maintenance and other wear and tear for a total of $10,000+. This did not sit well with me and I questioned the validity. I requested that CARR give me a quote to buy back the car and they initially refused to give decent price. I contacted GM to complain. After many more days, I was contacted and offered that GM and CARR would carry 70% of the cost of the transmission. I agreed with intent to sell/trade on my own. After many weeks, I picked up my Tahoe and paid $3,400 and headed back to Lake Oswego. As I entered downtown Lake Oswego on a slight hill, coming to a 4 way stop, my brakes completely failed…. I barely missed careening into the back of a car, as they naturally moved forward. I contacted CARR service supervisor, sobbing and shaking after the events and he immediately arranged for a tow. I then contacted the investigator. After many days, the GM investigator response, “it’s fixed free of charge”. I was told it was “known” that these cars “could” have a problem with the brakes, which is why there was an unlimited warranty should it occur. I expressed that I had zero trust in GM, CARR or the vehicle and expected to be compensated. The contact stated her understanding was that the GM re

STARTED SMELLING GAS FUMES. NOTICES GAS DRIPPING FROM UNDER VEHICLE LEAVING PUDDLE UNDER VEHICLE DRIVERS SIDE. SAFETY DUE TO GAS LEAK UNDER VEHICLE. BROUGHT TO BALISE CHEVROLET SPRINGFIELED MASSACHUSETTS. LEAK CONFIRMED FROM TOP OF TANK. REMOVED FUEL TANK AND FOUND THAT THE FEEDING HOSE HAS A HOLE DUE TO IT RUBBING ON THE TANK RECOMMENDED REPLACING FUEL SENDING UNIT, RING AND HOSES DUE TO MILEAGE. WHICH IS ONLY 114088. FUEL PUMP, MODULE UNIT RING, 2 HOSES REPLACED. THERE WERE NO WARNING LAMPS, MESSAGESOR OTHER SYMPTOMS PRIOR TO FAILIURE.

The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving at an undisclosed speed, the vehicle started to sputter and misfire before returning to normal functionality. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who determined that the #1 lifter had collapsed and was stuck in position. The vehicle was not repaired because the part was not available. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 125,000.

Transmission issue 2015 Tahoe: When accelerating when entering freeway to merge, or similar, vehicle sometimes experiences a sudden loss of power and lurch sensation -- almost feels like the truck was hit. Speed doesn't increase when needed in crash avoidance maneuver or when accelerating during general driving. Eventually transmission failed. Rebuilt. Has the same issue now. Appears this is part of GM class action lawsuit for transmissions and torque converter issues. Very disappointing.

Leaking fuel from the in-line on top of gas tank. Very dangerous and alarming that this is a known issue and you choose to set back doing nothing. It’s the same exact problem that everyone is talking about so it’s be nice to be reimbursed for the parts or repair or something

The contact owns a 2015 Chevrolet Tahoe. The contact stated that upon making a turn at slow speeds, the vehicle inadvertently shut off. The contact stated that an unknown warning light flickered on the instrument panel. The contact also stated that the vehicle restarted soon after failure. The contact attempted the notify the dealer of the failure but was informed to call back. The manufacturer was made aware of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 100,000.