Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Chevrolet Tahoe owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving 65 MPH, the vehicle hesitated and the temperature gauge failed to function as needed, with an abnormally loud sound coming from the cooling fans. The check engine warning light illuminated, and a message about the battery was displayed, and a warning light about the battery was illuminated. The vehicle was taken to an independent mechanic, who diagnosed that the thermostat housing had failed and the wiring to the fan had failed. The vehicle was repaired. Several days later, the contact stated that on a separate occasion, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The check engine warning light was illuminated. The vehicle was taken back to the independent mechanic, where it was diagnosed and determined that the catalytic converter had failed. …
The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving 30-45 MPH, the check engine warning light illuminated. Additionally, the contact stated that while driving at an undisclosed speed at night, the vehicle shut off inadvertently. The contact was able to veer to the side of the road. The contact stated that he opened the hood and moved the battery cables around, and the vehicle was able to restart. The contact stated that the vehicle would temporarily lose electrical power while driving. The vehicle was taken to an independent mechanic, where the contact was advised to add a fuel additive in the vehicle. The contact followed the recommendation, and the check engine warning light was no longer illuminated; however, the failure later recurred. …
The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving approximately 70 MPH, the vehicle lost motive power and decelerated to approximately 50 MPH. The contact pulled over and the steering wheel locked. The contact stated that the check engine, Reduced Engine Power, Stabili-trac, and other unknown warning lights were illuminated. The vehicle was turned off and restarted; however, the steering was still locked. The vehicle was shifted into drive(D) and failed to respond. The vehicle was towed to the residence. The vehicle was not diagnosed by a dealer or independent mechanic. The vehicle had not been repaired. The manufacturer had not been contacted. The failure mileage was 157,503.
The contact owns a 2015 Chevrolet Tahoe. The contact stated that while stopped and attempting to make a left turn, the vehicle started jerking, failed to accelerate as intended, and lost motive power. The check engine and traction control warning lights were illuminated. The vehicle was pulled over to the side of the road and turned off. The vehicle was restarted, and the warning lights remained illuminated. The vehicle was taken to an independent mechanic where it was diagnosed and determined that the #7 valve lifter had collapsed and needed to be replaced. The vehicle was scheduled to be repaired. The manufacturer was notified of the failure. The failure mileage was approximately 85,000.
The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, and the vehicle shuddered. The vehicle was taken to a dealer where it was diagnosed with a high-pressure fuel pump leak. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 19V837000 (Fuel System, Gasoline) however, the model year was not included in the recall. The dealer confirmed that the vehicle was not included in the recall. The manufacturer was made aware of the failure and also confirmed that the vehicle was not included in the recall. The failure mileage was approximately 65,000.
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.
The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving from a complete stop and while driving at various speeds, the vehicle made an abnormal whining sound. There was no warning light illuminated. The vehicle was taken to the local dealer, where the transmission was replaced. The contact stated that after retrieving the vehicle from the dealer while driving 10-15 MPH, the brake pedal was depressed but was significantly firm and failed to respond. The contact drove into a curb and struck a parking sign pole. The air bags did not deploy. The contact stated that the failure exacerbated pre-existing injuries. The dealer was contacted and advised the contact to restart the vehicle and depress the brake pedal to verify whether the brake pedal was operable. …
I own this 2015 Tahoe, it has 80,000 miles on it. While I was driving to work, the vehicle lost power as I was in the middle of major intersection. I was almost rear ended by another car. A few seconds later the car began going again. I had no service lights, no warning lights and no check engine light come on. It was running rough, lacking acceleration. I immediately brought it to my mechanic. They did they're testing and found Cylinder# 6 has collapsed. I was told that I will need a new engine at costs of over $8000.00. I have always maintained my vehicle and it's had regular oil changes every 4000 miles. In fact I'm still making car payments, and now I have to absorb this major cost of replacing an engine. When I looked on line to find some information of this Lifter problem, I found thousands of complaints of premature engine failures on these very expensive vehicles. …
My 2015 Chevrolet Tahoe with 90,000 miles needs a new camshaft and all 16 lifters need to be replaced. There was no forewarning about this huge problem. Literally, one day I was out in my car, and the accelerator suddenly stopped working for a while. Then, all of a sudden there was a hard jerk, and it sped up on its own. When I finally found a safe spot to pull over I went to push on the brakes and the entire car just started shaking. My poor children were terrified as this could've turned into a terrible accident for me and the other drivers around me. I immediately called my local mechanic and was told to bring it in immediately. On my way there the service indicator lamp came on. Upon inspection by my mechanic I was told I need a whole new engine. I have not had it repaired because I cannot afford to do so. …
Check engine light came on after vehicle starting losing power in steering column. Speedometer was moving up and down with some other gauges doing the same simultaneously. The vehicle provided warning of stabilitrak after dismissed, it gave another warning stating, "Steering Assist is Reduced Drive with Care." It became harder to accelerate and very distracting as the stabilitrak error continued to pop up with the speedometer and other gauges, such as RPM, going up and down continuously. These gauges would then stop working altogether then start to work briefly. Then, the gauges would continue to malfunction by going up and down with the stabilitrak error on screen. I got off the interstate and I have having issues with acceleration from first gear. Vehicle was hesitating which was terrifying. It was failing to engage. …
Engine complaints in other Tahoe years
Frequently asked questions
How common are engine problems on the 2015 Chevrolet Tahoe?
NHTSA has 48 complaints about the engine & cooling of the 2015 Chevrolet Tahoe, 7% of the model year's 659 complaints. The component named most often is cooling system (1 mentions).
Is there a recall for 2015 Chevrolet Tahoe engine problems?
No. NHTSA lists no engine & cooling recall for the 2015 Chevrolet Tahoe, though it has 14 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 Chevrolet Tahoe engine problems start?
Half of the complaints with a recorded mileage happened before about 80,000 miles, and 21% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 1 fire and 1 injury to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.