One problem related to power steering failed has been reported for the 2015 Chevrolet Tahoe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Chevrolet Tahoe based on all problems reported for the 2015 Tahoe.
Power steering failed instantaneously while driving in traffic while making a left turn at 15mph on a city intersection. Luckily an accident was avoided. Took the car to the dealership for a diagnosis. Apparenly the steering motor has failed and in turn they recommend replacing the entire "steering gear" gm # 84368394 for $2250. Called gm, they stated that the car is out of warranty and this failure is considered normal wear and tear. There is an existing recall for the 2015 Tahoe model, but this VIN is not included so they will not cover the repair. The recall referenced is, NHTSA campaign # 4v719, gm recall 14743,.