One problem related to warning 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.
When driving at slow speeds (restaurant drive-thru, stop and go traffic) I often find myself having difficulty pushing the brake pedal, as it is extremely hard to push down the pedal and the car will not come to a stop for 2-3 feet. I feel a strong vibration during this and a low pitched crunching sound, and cannot push the brake down. I am afraid I will have a collision. I did the 2019 recall in which the dealer recalibrated something with the brakes. But it I continuing to have problems, I took it back to the dealership to test the vacuum pump, but they said the "testing was normal" and they were not willing to drive it long enough to replicate the problem I was having, saying that it was worn rotors and brake pads that were causing the issue. I know what the car feels like when the rotors/pads need changing, and I do have slight vibration when braking at high speeds, but never where I have increased brake effort. Only at slow speeds and if I am pressing the brake multiple times.