HP Tuners Adds Support for 2026 Chevrolet & GMC 6.6L L5P Duramax Trucks
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 […]


