2015 Chevrolet Silverado 1500: complete transmission failure

Filed Jun 24, 2026 · Transmission · MI

While driving at highway cruising speeds, the vehicle began showing abnormal RPM fluctuation/surging at steady speed. The RPM would repeatedly move up and down even while maintaining a constant speed, including when cruise control was used. There were no warning lights or dashboard messages at the time the symptoms first appeared. The suspected failure is the torque converter/torque converter clutch in the automatic transmission. After diagnosis, I was advised that the torque converter failure contaminated the transmission fluid/internal transmission components, and that the transmission now requires replacement. The failed transmission/related components may be available for inspection upon request, depending on repair timing. This condition created a safety concern because the drivetrain was not operating normally at highway speeds, causing inconsistent power delivery and concern that the transmission could slip, overheat, fail further, or leave the vehicle unable to maintain speed in traffic. A sudden loss of propulsion or worsening transmission failure could increase the risk of a crash. The problem has been diagnosed by a transmission repair facility. The vehicle has not been inspected by the manufacturer, police, or insurance representatives. No crash occurred. No injuries occurred. No warning lamps appeared before the failure. The first noticeable symptom was the RPM flutter/surging at steady highway cruising speed. The exact internal cause is unknown, but the best assessment is torque converter/torque converter clutch failure resulting in contamination and failure of the transmission.

Filed Dec 20, 2025 · Transmission · TX

After years of driving like a grandma, my transmission unexpectedly failed while travelling down the freeway at 70mph. There were no warning signs, no vibrations, and I changed my transmission fluid at the dealer-recommended intervals. Huge bummer, really. I use my truck for work, and because of the time of year, it is unlikely that I'll be able to get it repaired for a few weeks. Certainly not going to help my bank account either, since a new transmission from Chevrolet is $4,800 before labor and other parts.

Filed Apr 30, 2025 · Engine · TX

The transmission went out with only 140,000 on it. It also has problems with shaking

Filed Apr 6, 2025 · Transmission · WI

The valve body on my transmission failed and needs to be repaired again. It was already replaced by gm, 1k miles later it failed again.

Filed Mar 10, 2025 · Transmission · MA

Transmission failure at 133,000 miles due to faulty tourque converter … which was replaced AFTER … i repeat AFTER… replacing all components that failed because of the faulty torque converter … so now its showing same symptoms as did before failed … only 30,000 since repairs

Filed Jul 31, 2023 · Transmission · FL

The transmission began slipping and failed at 106,000 miles in spite of obtaining all recommended services throughout the life of the vehicle. It failed completely while driving, which was a major safety issue. It now needs a new transmission. After searching online, I see that numerous owners have reported issues with the 2015 Chevy Silverado transmission. There were no warning lights. It began to make a noise and a shaking and failed about one week later.

Filed Sep 12, 2022 · Transmission · OH

For several years this truck will at times start "grade braking" on its own. In other words, at speed, ie: 55 mph, the computer chip will tell the transmission to downshift to assist in "grade braking". The danger is that it actually speeds up the truck, and while attempting to stop at a stop sign, (or light), the truck is actually speeding up, while I am actively pushing on the brake pedal to stop at the light. I ended up having to replace the transmission with a new (rebuilt) transmission. I hoped this would end the problem, but now once again, I have the problem occurring with the replacement transmission. GM tells me they cannot program out the grade braking component. This is a very dangerous situation in which one day I will be unable to stop where required, due to stopped traffic, or a stop signal.

Filed Jun 9, 2021 · Transmission · GA

Truck has 130k miles. Never used for towing or rough driving. Transmission is going bad. Reached out to GM and was told it’s our problem. We paid 43,000 for this vehicle and transmission issues already. We have a 1997 Chevy Silverado as well. With 321,000 miles on it and just had to replace the transmission. Engine is still running strong. For a vehicle to cost as much as our 2015 you would think the quality would better.

Filed Feb 22, 2021 · Transmission · 93,000 miles · WI

Transmission failed at 93k miles. Luckily for me, I was a month away from warranty expiring. However, so many people have ended up on the wrong side of the warranty I wanted to make sure I file a report so gm can maybe recall their weak transmissions or torque converter. Trans has been shifting and shuddering so hard from 1st to 2nd gear and 2nd back to 1st. Was driving home from work on the highway and all of a sudden trans would not shift into 6th gear. When taking exit home, truck died. Restarted and got codes p0741 and p0700. Took to dealer and they replaced the transmission. Fluid smelt burnt and metal shavings in pan.

Filed Oct 8, 2020 · Transmission · 120,000 miles · AL

When I purchased this vehicle I went to the dealership to complain about the transmission. When applying the gas, the car hesitated. I was told the car was "learning" and this was part of the computer system. Now that the warranty is off, it now needs a new transmission.

Filed Mar 6, 2020 · Acceleration, Engine · 112,000 miles · NC

Rpms were rising above 6,000 without any power. Randomly while on highway, truck only had 112,000 miles on it and had to have a new transmission put in. And has had many other issues such as the lifters closing while on the highway and brake issues. The worst model truck ever made.

Filed Mar 29, 2019 · Transmission · 150,000 miles · TX

Transmission always shifted hard and finally stopped shifting at all while in motion (backing out of our driveway). Despite taking it a chevy dealership for 3 years for maintenance, we were never told their was a known issue. When the transmission failed, we took it back to the chevy dealership and only when we took it to a transmission shop to get a second opinion were we told this was a known factory defect on several gm models. We ended up having to have the transmission rebuilt along with the rear end to the tune of over $5,000. Lemon law does not hold up because we did not have any work done under the warranty (which only covered the first year).