2006-2010 Chevy Duramax LBZ/LMM 5 Position Switch

Improve the performance of your motor!

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How it Installation?

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Step 1:

1.Open the hood, first disconnect the negative terminals of both power sources, locate the hood release rubber seal on the driver's side firewall, and then pull it out.
2.Locate the Engine Control Module (ECM), which is usually located near the battery on the driver's side at the front of the engine compartment. Then disconnect the ECM from the ECM connector.

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Step 2:

1.Carefully thread the wire through the hole where the rubber gasket was removed earlier into the engine compartment from the cab. Ensure the wire on the engine compartment side is long enough to connect to the Engine Control Module (ECM) harness.
2.Use the conduit provided with the switch to protect the switch wire from high temperatures. Carefully reinstall the hood latch rubber gasket around the harness.

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Step 3:

Locate the larger connector on the ECM harness and ensure it is in the closed position. Use a small screwdriver to remove the cover from the ECM harness.

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Step 4:

Remove the purple slider attached to the ECM harness.

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Step 5:

1.Locate pins #46 and #54 and insert the two switch pins here. The wire colors are not important. Make sure they are fully inserted into the bottom of the ECM connector.
2.Then reinsert the purple slider into the ECM harness and reconnect the ECM harness cover.

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Step 6:

1.Finally, reconnect the ECM connectors to the ECM, making sure to connect the larger connectors first, then the smaller ones. The engine compartment installation is now complete.
2.Drill a small hole of appropriate size on a suitable panel near the dashboard in the driver's cab and install the switch.
3.Secure the switch harness to the other harnesses below the dashboard using electrical tape or cable ties.

Trucktok 2006-2010 Chevy Duramax LBZ/LMM 5 Position Switch

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Trucktok 2006-2010 Chevy Duramax LBZ/LMM 5 Position Switch

$61.99

FITMENT

2006–2010 6.6L Chevy Silverado & GMC Sierra Duramax 2500HD / 3500HD.

DESCRIPTION

Product Overview

Unlock the true potential and versatility of your 2006–2010 GM Duramax LBZ or LMM engine. The TruckTok 5-Position SOTF Switch lets you change your truck's power levels instantly from inside the cab—no more pulling over to reflash computer or waiting for a programmer to load.
Whether you need maximum fuel efficiency for a road trip, extra torque for heavy towing, or full horsepower for the track, this premium rotary switch delivers crisp, on-the-go mapping adjustments in less than a second.

Key Features

Billet Aluminum Knob: Features a high-quality knurled aluminum knob that offers a rugged grip and adds a sleek, professional look to your dashboard.
Engine Bay Protection Ready: The entire wiring harness is wrapped in a high-temperature split loom to protect the delicate signal wires from engine heat, vibration, and friction.
Instant Map Switching: Seamlessly toggle between your 5 custom-tuned profiles (such as Optimized Stock, Eco, Heavy Tow, Street, and Race) without shutting down the engine.
Pre-Terminated Factory Pins: Engineered for a clean installation. The wires come with factory-style pins that slide directly into your specific LBZ or LMM ECM connector—no slicing or wire cutting required.

FAQ

Q: What happens if the switch gets unplugged or a wire breaks?

A: The ECM will default to Tune 1. The switch works by changing electrical resistance; if the circuit is broken, the ECM senses maximum resistance and automatically reverts to first tune slot (usually base or stock) to ensure safe operation.

Q: Is the switch harness waterproof? What happens when I wash my engine bay?

A: Avoid blasting high-pressure water directly at the ECM connectors when washing the engine bay. Ensure factory rubber seals are fully seated to prevent moisture from causing voltage fluctuations between maps.

Q: Is there a delay when I click the switch to a different power level?

A: The change happens instantly, in less than a second. The moment you click the knob, the ECM immediately switches fuel and timing maps, though your turbo may take a brief moment to spool to the new target boost.

How to Install a 5-Position SOTF Switch on a 2006-2010 LBZ/LMM Duramax

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