TECHNICAL SERVICE BULLETIN: SERVICE ACTION: IVT SOFTWARE LOGIC IMPROVEMENT AND/OR IVT REPLACEMENT (SA424) - This bulletin has been revised to include additional information. This bulletin provides the procedure to improve the Transmission Control Module (TCM) logic and if necessary, replace the Intelligent Variable Transmission (IVT) on 2019-2021MY vehicles which may exhibit a MIL with the DTC(s) listed below.
