The contact owns a 2019 Jeep Grand Cherokee. The contact received notification of NHTSA Campaign Number: 24V838000 (Service Brakes, Hydraulic); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while attempting to accelerate from a stop, the vehicle jolted before shifting gear and accelerating. The contact stated that the gear shifter failed to release immediately to the intended gear while in park(P). The contact stated that several attempts were needed to release the gear shifter out of park(P). The contact stated that after shifting out of park(P) into reverse(R), the message to shift out of park was displayed. The brake warning light was illuminated. The dealer was contacted. The manufacturer was not made aware of the issue. The failure mileage was 53,000. VIN tool confirms parts not available.