Brakes Failed problems of the 2017 Chevrolet Tahoe

Hard brake pedal resulting in little or no stopping power when applying the brakes at low speed. To get the vehicle to stop, you must stomp on the pedal as hard as you can. The situation typically occurs when parking. The brake application or two are fine, but after that the brakes fail. And also make a viberation in the brake pedal while sounding rough! was driving to work and brakes pedal went to the floor with no pressure at the pedal.

Tl the contact owns a 2017 Chevrolet Tahoe. The contact stated that after driving for 4 hours at 55 mph, the brake pedal was depressed to the floorboard with an abnormal grinding sound. The service brake assist warning message was displayed on the instrument panel. The contact engaged the parking brake to stop the vehicle while driving up an incline. The next day, the brakes resumed normal operation on the drive home. The contact stated that since the failure, he had experienced intermittent brake failure while traveling at various speeds, with the same warning light flashing on the instrument panel. The vehicle was taken to titus-will Chevrolet Buick GMC Cadillac (2425 carriage loop sw, olympia, wa 98502) and it was confirmed that the failure was caused by a defective vacuum pump. The vacuum pump was replaced however, the failure persisted. The vehicle was taken back to the same dealer where it remained in their possession unrepaired. The manufacturer had yet to be notified of the failure. The failure mileage was approximately 75,300.

In September of 2019, GMC issued a recall for several GMC vehicles regarding "service brakes, hydraulic:power assist:vacuum". As such, the vehicle was serviced at the dealership per the instructions issued by GMC. However, several months later, while operating the vehicle in reverse out of a crowed parking lot, the brakes failed to stop the vehicle. Placing the gear in neutral along plus the emergency brake, was required to stop the vehicle. The was an extremely close call to the safety of the surrounding bystanders in the parking lot. Upon discussions with both the dealership and GMC, it was reported that the current recall only reprograms the components (reference the letter issued by GMC and the NHTSA's web site for this recall). It was further commented by both the service manager at the dealership and customer service at GMC, that this will not address all vehicles identified in this recall, meaning more action may be required to fix the underlining issue. In this case, several components were needed to be physical replaced, namely the vacuum pump. In addition, it was acknowledged by both the dealership and GMC that a certain percentage of these vehicles identified in the original recall will experience similar issues (brakes failing to stop the vehicle). During the call to GMC customer assistance (866. 790. 5600), the senior manager refused to take the advice to inform all customers/consumers of this dangerous ongoing risk. Even though it's a known failure, GMC has yet to provide additional notification to consumers that the current recall may fail to address the underlining safety failure to the braking system. GMC should issue a new recall to advice the replacement of the physical components of the vacuum brake assistance system by all effected vehicles immediately. Otherwise, they will not replace the parts unless the consumer experiences an actual failure.

Hard brake pedal resulting in little or no stopping power when applying the brakes at low speed. To get the vehicle to stop, you must stomp on the pedal as hard as you can. The situation typically occurs when parking. The brake application or two are fine, but after that the brakes fail. This same issue appears to be well documented under NHTSA id number 10081053 and gm pit5361b, however those do not include the 2017 model year, and I am seeing what appears to be the exact same issue on my 2017 Tahoe.