HP Tuners diesel switches give a driver the ability to move between a stock calibration and as many as five custom maps stored on the vehicle's ECM without connecting a laptop or handheld device. The H-M04-00 is a 6-position rotary switch built around a knurled aluminum knob and position dial, wired in through a 5 ft. OBDII pass-through cable, for 2017-2022 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 HD trucks.

HP Tuners H-M04-00 Features:

• Selects between a stock calibration and up to five custom maps using a single 6-position rotary switch.
• Features a knurled aluminum knob and position dial for a positive, tactile shift between maps.
• Connects through a 5 ft. OBDII pass-through cable that keeps the factory diagnostic port usable.
• Pairs with an optional OBDII port bracket and HP Tuners Switch on-the-Fly, both sold separately, for added mounting flexibility.

Emissions Disclaimer

HP Tuners designs and manufactures software and hardware tools for vehicle diagnostics, scanning, logging, calibration, and data acquisition purposes. The authorized use of such tools is to bring a motor vehicle into emissions compliance and/or to maintain emissions compliance, as well as for use on competition/racing and other exempted vehicles. HP Tuners does not create or provide tunes or pre-made calibrations.

HP Tuners' Terms of Use, policies, and agreements mandate that users shall comply with all local, state, and federal laws. In using HP Tuners software and hardware tools, you are representing, warranting, and agreeing not to use, employ or allow any HP Tuners tools to operate as a defeat device or to violate emissions compliance in any manner whatsoever. You further represent warrant and agree that the HP Tuners tools shall only be used by manufacturers, calibration businesses, and professionals to develop emissions-compliant and/or exempted calibrations.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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