One problem related to brake hoses, lines/piping, and fittings 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.
Brakes became extremely stiff, and power assist was lost. Vehicle is very hard to stop, nearly causing an accident several times. Took vehicle to a service shop, and found out that the vacuum pump was defective and caused oil to enter my brake vacuum and brake lines. Had to all be replaced.