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Ensuring 100% of the retarding force is being transferred in 3rd and 4th gears
Low Reverse Steel
as well as cleans injectors
The installation and operation of this product may require aftermarket tuning and modifications
Our kit is the most complete replacement transmission line kit available for your LML truck
HP Tuners GM E42 ECM Upgrade Service (2024-2026 GM Duramax L5P) Parts 2009-2012 Dodge 2500/3500 Ensuring 100% of the retardingGet your 2024+ Chevrolet Silverado and GMC Sierra 2500 3500 6. 6L Duramax ready for tuning! Optimize your GM L5P Truck Performance, Upgrade the potential of your 2024+ Chevrolet Silverado and GMC Sierra 2500 3500 6. 6L Duramax with the L5P ECM Service by HP Tuners. This service grants you the capability to fine tune your vehicles performance. Buy this send in upgrade service to modify your existing E42 ECM for integration with the latest version of