Density Speed and Performance - TCM Tuning - HP Tuners - 2024-2026 L5P Duramax

Custom Tuning built for your 24+ L5P Duramax to suit your build, loaded via HP Tuners.

TCM Unlock is Required.

In order to start tuning, your truck requires this one-time, send-in upgrade service to upgrade the T93 TCM for custom tuning using our VCM Suite software.

Spare TCMs will NOT BE ACCEPTED, no exceptions. Only the original TCM from your vehicle is acceptable for this service.

This means your T93 TCM must be removed from your truck and shipped to HP Tuners’ headquarters for servicing. This process takes up to 7 business days to complete (not including shipping)

TCM Tuning

Revised shift schedule to improve drive-ability

Improved shift timing

Re-designed torque converter lock-up strategy

Allows power transfer from the engine to the wheels more directly via TCC lock-up