2024-2026 L5P Transmission Tuning

Elevate your 2024-2026 Duramax's shifting performance with Diesel DNA's premium custom transmission tuning. Designed specifically for modern heavy-duty applications, this tuning optimizes shift firmness, timing, and pressure for smoother, quicker, and more reliable gear changes—whether you're daily driving, towing heavy loads, or pushing performance limits.

Please send your stock read and info log to Dieseldna-calibrations@protonmail.com with your order number