HPTuners SOTF Switch Duramax LML Hard Parts CORE CHARGE REFUNDS ARE ISSUED

CORE CHARGE REFUNDS ARE ISSUED ONCE YOUR CORE IS RECEIVED AND INSPECTED IN ACCORDANCE WITH THE CORE RETURN POLICY PROVIDED VIA EMAIL AFTER PURCHASE

Towing & Performance

The customer is responsible for ensuring the core arrives safely and within the applicable return period

Check out the GM E41 ECM Service (L5P) instead

Modified turbo(s)

HPTuners SOTF Switch Duramax LML Hard Parts CORE CHARGE REFUNDS ARE ISSUEDHardware 6 position rotary switch for HP Tuners L5P and Cummins (CM2450 and CM2350) Switch on the Fly OS. Please note that Diesel Switch is specific to the application you select. Diesel Switch is not universal interchangeable. Change maps at the turn of a switch. Diesel Switch by HP Tuners lets you power up from a stock calibration to one of five custom maps with the turn of a switch. Pair with HP Tuners Switch on the Fly OS for complete control and