GM Recall #:
Jan 30, 2020
Brake System Malfunction Warning
General Motors has decided that certain 2019 model year Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles may fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) No. 126, “Electronic stability control systems for light vehicles” and FMVSS 135, “Light vehicle brake systems.” While receiving service at a GM dealership for an unrelated condition, these vehicles may have received the pre-launch version of the electronic brake control module (EBCM) software intended as the remedy in NHTSA Recall 19V889. This pre-launch EBCM software contains an error. If (i) the vehicle is started remotely using the Onstar mobile app or (ii) the driver enters the vehicle and waits five or more minutes before starting the vehicle using the ignition, this software error can, in rare cases, disable the vehicle’s electronic brake assist and illuminate the ESC, ABS and BRAKE telltales.
Safety Risk Description:
NHTSA Recall 19V889 involved a software error that could cause the vehicle’s ESC and ABS telltale lamps to fail to illuminate in certain circumstances. If a driver were unaware that ESC and ABS were not functioning, there may be increased risk of a crash.
Dealers will reflash the EBCM.