The contact owns a 2024 Chevrolet Tahoe. The contact received notification of NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); 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 dealer was contacted. The manufacturer was made aware of the issue and opened a case. The contact had not experienced a failure. VIN tool confirms parts not available.