Trucktok 2001-2004 Chevy GMC Duramax LB7 5-Position SOTF Switch
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Product Overview
Q: How do I wire this switch into my LB7's engine computer (ECM)?
A: Connection is straightforward using the designated ECM pins: Route the harness through the driver-side firewall grommet to the ECM. Insert the Blue Wire into Pin 69 of the gray ECM connector. Insert the Black Wire into Pin 49 of the gray ECM connector.
Q: Where should I mount the selector switch in my cab?
A: It is highly versatile. Most owners choose to mount the switch on the lower dashboard panel, inside the center console, or onto a custom switch pod. Only a small hole needs to be drilled to secure the switch shaft.
Q: Can I use this switch on a 2004.5 or newer Duramax (LLY/LBZ)?
A: No, this specific model is only for 01–04 LB7 engines. Other generations use different ECM pin locations and wiring configurations, 04.5 - 05 model purchased dedicated SOTF Switch.
Q: Does this switch include the custom tunes or calibration files?
A: No, this is a hardware interface only. Your ECM must already be flashed with a compatible multi-map tune for this switch to work; the dial simply navigates those pre-loaded maps.