Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
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 owned a 2015 Chevrolet Tahoe and stated that while driving, the vehicle's doors locked and unlocked randomly, the cabin lights flickered, and the doors failed to unlock properly during entry attempts, while the radio randomly selected its own options and the touchscreen occasionally stopped working despite the alternator and battery being replaced. Furthermore, the vehicle suddenly and randomly lost motive power and shut off on main roads, highways, and at stop signs, which caused the dashboard to flash on and off and the power steering to fail completely. When attempting to turn off the vehicle by twisting the key, it refused to shut down initially and triggered a large engine bay fan to kick on, though replacing the temperature gauges eventually resolved this specific shutdown issue. …
The contact owns a 2015 Chevrolet Tahoe. The contact stated that the vehicle had been experiencing electrical failures. The contact stated while driving at various speeds, warning messages indicating that the forward collision system, the StabiliTrak, and the theft deterrent had failed, and other unknown messages were displayed. The contact stated that the vehicle would suddenly shut off. The contact was able to restart the vehicle after several attempts or after adjusting the battery cable. The vehicle was taken to the local dealer on two occasions; however, the dealer could not duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 130,000.
The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving at undisclosed speeds, the electrical system was failing intermittently. Additionally, several unknown warning lights were illuminated. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 122,000.
The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving on the highway at an undisclosed speed, the trailer braking system warning light illuminated. The contact stated that the failure recurred several times. The vehicle was not taken to be diagnosed or repaired. Neither the manufacturer nor the dealer had been notified of the failure. The failure mileage was 123,917.
The contact owns a 2015 Chevrolet Tahoe. The contact stated that the message "Service Trailer Brake System" was displayed on the instrument panel while starting the vehicle. The vehicle was taken to the dealer, but the vehicle was not diagnosed. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 71,000.
Odometer Fraud. The contact purchased a 2015 Chevrolet Tahoe. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 116,485, and at the time of registration, it was discovered that the mileage was 150,237.
The contact owns a 2015 Chevrolet Tahoe. The contact stated that the trailer hitch warning light was illuminated with an audible tone. The vehicle was taken to the local dealer however, the mechanic was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was not notified. The approximate failure mileage was 73,988.
Anda manejando cuando empez a salir mucho humo por el tablero y la troca ya no respodia no podia ya aselerar y el volante se puso duro me sali de la carretera marqu al sitio de emergencia por ayuda pero la tahoe se quemo muy r pido
Related recalls
Electrical system › Ignition
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Silverado and GMC Sierra trucks manufactured January 24, 2014, to February 26, 2014, 2015 Chevrolet Suburban vehicles manufactured February 12, 2014 and Chevrolet Tahoe vehicles manufactured February 6, 2014, to February 13, 2014.
Remedy: GM will notify owners, and dealers will replace the ignition lock housing, free of charge. The recall began on November 20, 2015.
Electrical system › Software
General Motors LLC (GM) is recalling certain model year 2014-2015 Chevrolet Silverado and GMC Sierra, and 2015 Chevrolet Tahoe and Suburban vehicles equipped with a base radio and an internal amplifier.
Remedy: GM will notify owners, and dealers will update the radio software, free of charge. The recall began on July 2, 2014. Chevrolet owners may contact GM's customer service at 1-800-222-1020.
Electrical complaints in other Tahoe years
Frequently asked questions
How common are electrical problems on the 2015 Chevrolet Tahoe?
NHTSA has 135 complaints about the electrical system of the 2015 Chevrolet Tahoe, 20% of the model year's 659 complaints. The component named most often is integrated trailer brake control (2 mentions).
Is there a recall for 2015 Chevrolet Tahoe electrical problems?
Yes — NHTSA recall 15V-640 (ignition, Oct 9, 2015); NHTSA recall 14V-301 (software, Jun 6, 2014). Recall repairs are free at authorized dealers.
At what mileage do 2015 Chevrolet Tahoe electrical problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 23% before 25,000 miles.
Is it dangerous?
Owners linked 4 crashes, 1 fire and 4 injuries to electrical system 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.