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

Fits

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.

You need an HP Tuners device and 4 credits to flash these tunes. Click here for the MPVI, click here for the RTD4 and here for the credits. (You only need one of these devices).

TDN Users: Tuning is delivered through the HP Tuners TDN app. Your stock read goes to your tuner in the app and your tune file comes back the same way.

TDN Code: JSVN-3877

Part Number: PSP-17-23-DMAX-TCM-HP

• 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.

• TCM UNLOCK REQUIRED: These tune files require your Transmission Control Module (TCM) to be unlocked before flashing.
• This purchase is for the TCM TUNE FILE ONLY and does not include any ECM (engine) files.
• A stock FICM read with HP Tuners is required if using an MPVI device.

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