2019-2023 GM 1500/HD E90 ECM & T93 TCM Upgrade Kit (HPTECM-00-E90-K)This GM E90 T93 upgrade kit enables full tuning and diagnostics on supported 2019 to 2023 GM vehicles by upgrading both the E90 engine control module and the T93 transmission control module. The kit allows the upgrade and access to tuning functions without removing the controllers from the vehicle and is intended for use with compatible HP Tuners interfaces and software. Features Enables upgrade of GM E90 ECM and T93 TCM for full tuning access