One problem related to brake light on has been reported for the 2018 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 GMC Yukon based on all problems reported for the 2018 Yukon.
Reversing from a parking spot and brake pedals were as hard as a rock. I had to push extra hard on the pedals to stop the vehicle. Vehicle only has 33,000 miles on it. Brake assist light comes in to dash notification for a second then goes away and brakes return to normal. This has happened 3 times in the past 3 days since we bought the vehicle.
| Service Brakes problems | |
| Brake Light On problems |