2017-2026 Duramax Peakside HP Tuners TCM Tuning (PEAK-DUR-HPTUN-TCM)

Unlock your Allison's true potential. Peakside Performance offers custom Transmission Control Module (TCM) tuning for your 2017-2026 Duramax using your HP Tuners MPVI or RTD4 device. This specialised tuning dramatically increases the driveability of your Allison by precisely modifying and adjusting shift points, line pressure, and overall holding capacity, making your truck feel responsive and powerful in any driving condition.

• Custom TCM tuning designed for the Allison transmission.
• Requires an HP Tuners MPVI device and 4 credits
  • Compatible with MPVI2, MPVI3, MPVI4 & RTD4 Devices
• Dramatically increased driveability through optimized tuning.
• Modifies shift points, line pressure, and increases clutch holding capacity.

You need an HP Tuners device and 4 credits to flash these tunes. Click here for the MPV and Here For Credits (You only need one of these devices).

RTD4 Users: Once you’ve shared your stock read with your tuner in the TDN app, please email us. We’ll notify the tuning company and keep things moving.

TDN Code: JSVN-3877

Part Number: PSP-17-23-DMAX-TCM-HP