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Condition
General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2020 model year Chevrolet Corvette vehicles. Material used in a sensor connection in the electronic brake boost system in these vehicles may have been contaminated during the material supplier’s production process. Contamination of this material may cause an interruption of communication between the sensor and the brake boost system under certain conditions. If communication with the sensor is interrupted, electronic brake boost assist could be lost. Extra pedal force will be required to slow and stop the vehicle, increasing the risk of a crash.
Correction
Dealers will replace the electronic brake boost module.
Service Procedure
NOTE: A new Brake Pedal Push Rod Retainer is required to complete this service. DO NOT reuse the original retainer.
NOTE: Be sure to Reprogram and Bleed the system per the SI procedure.
Corvette
Replace the brake master cylinder – with power brake booster and electronic brake control module. Refer to Brake Master Cylinder Replacement – With Power Brake Booster and Electronic Brake Control Module in SI.