HP Tuners Adds Support for 2026 Chevrolet & GMC 6.6L L5P Duramax Trucks
Published on: December 9, 2025Categories: New Vehicle Support, Press Releases
BUFFALO GROVE, IL, December 9, 2025—HP Tuners is proud to announce first-to-market custom tuning and diagnostics support for the 2026 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks equipped with the 6.6L Duramax (L5P) and the E42 ECM. This update expands HP Tuners’ growing Global B lineup with full read, edit, scan, and write capabilities for the newest generation of GM’s heavy-duty diesel platform.
This new support is for the following models:
- 2026 Chevrolet Silverado 2500/3500 6.6L L5P Duramax
- 2026 GMC Sierra 2500/3500 6.6L L5P Duramax
Requirements for tuning:
- MPVI3 or MPVI4 device – $399.99
- Credit-licensing cost: (8) Universal Credits per ECM – $99.98
- Latest version of VCM Suite 5.1.5130+ – Free download
- Supported on TDN using RTD4 devices (8 credits)
- Requires the GM E42 Global B ECM Upgrade Service
HP Tuners is proud to continue supporting the Duramax community with advanced tuning and diagnostic capabilities.
ABOUT HP TUNERS—HP Tuners is the leading diagnostic and calibration solution for vehicle aftermarket performance with over 20 years of expertise. From diagnostics, data logging, scanning, custom calibration, and more, HP Tuners offers the most comprehensive solution for OBDII-equipped import, domestic, and powersports vehicles. Connect with HP Tuners at www.hptuners.com.