HP Tuners | 2024 - 2026 L5D Duramax 4500|5500|6500 Trucks

Select Tune: *

Select Tuning Type: *

HP Tuners ECM Upgrade Service (Stock ECM MUST be upgraded by HP Tuners): Optional No Thanks $999.99 | L5D E42 GM ECM Upgrade Service

Add HP Tuners RTD4 Device: Optional No Thanks $399.99 | RTD4 Tuning Device

Add MPVI/RTD Credits: Optional No Thanks $399.92 | 8 Credits

VIN: *

MPVI3/MPVI4/RTD4 Serial Number (Required if not purchasing a RTD4): Optional

Power Level (Single Tune Only): *

4X4 Shifter Location: Optional

Modifications - Read Carefully (Mods increase lead time up to 5 business days, rush fees do not apply): *

Explain Modifications | Input Tire Size: *

Add Can Plugs: Optional No Thanks $30 | 2024-2025 L5D CAN Plugs

Add Cooler Auxiliaries: Optional No Thanks $400 | 2024-2026 Cooler Upgrade Kit + Throttle Valve Upgrade

HP Tuners Overnight Return Shipping: Optional No Thanks $150 | HP Tuners Rush Shipping Fee

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