Ignitions and Electrical› Computers, Chips, Modules and Programmers

Fish Tuning

DSP5 Switch

$40.00

SKU: DSP5LBZ-LMM

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Fish Tuning DSP5 Switch is a five-position rotary switch designed for tune selection on the fly. It is specifically for 2004.5-2010 LLY, LBZ, and LMM Duramax trucks. This switch is required for using switchable (SOTF) custom performance tuning.
Show original supplier description
The Fish Tuning DSP5 Switch is engineered to provide on-the-fly tune selection for 2004.5-2010 GM 6.6L Duramax trucks equipped with LLY, LBZ, or LMM engines. This unit is essential for those running switchable (SOTF) custom performance tuning, allowing you to change tunes without needing to stop your vehicle. The kit includes the rotary switch with a knob, a switch position label/face plate, and wire conduit for installation. This DSP5 switch is compatible with EFI Live tuning and requires compatible DSP5 tuning to function. It is designed for Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 models from 2006 to 2010. The product page details a wide range of compatible model years and engine configurations, specifically listing 2004.5 through 2010 for LLY, LBZ, and LMM Duramax engines.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandFish Tuning
Part NumberDSP5LBZ-LMM
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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