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Five position switch that when used in conjunction with our LB7 Duramax custom performance tuning is used to change tunes on the fly. Specific to 2001-2004 trucks. The Keylock DSP5 Switch locks the tune in one position.
Tunes may be changed on the fly, but if you to prevent another driver from switching to another tune on your truck, you can lock it into a desired position.
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