FITMENT
- 2001–2004 6.6L Chevy Silverado & GMC Sierra Duramax LB7 2500HD 3500HD.
DESCRIPTION
Product Overview
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Soot recirculation and thermal fatigue pose ongoing risks to the lightweight composite intake system on 3.0L LM2 Duramax trucks. Over time, recirculated exhaust gases mix with oil vapor to coat intake runners in stubborn carbon sludge, restricting engine breathing, lowering fuel economy, and risking costly cracks in the plastic intake manifold.
- This complete 3.0L LM2 Duramax EGR Removal Kit bypasses the OEM exhaust recirculation loop to protect your engine’s intake tract. By removing the failure-prone cooler assembly and sealing off unused ports with rugged block-off plates, it prevents manifold sludge buildup, lowers thermal strain under load, and delivers the crisp throttle response and clean airflow your diesel needs.
Key Features
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Sheathes the wiring harness in high-temperature split loom, guarding the wires from engine heat and vibration for lasting protection.
- Flicks between driving modes in under a second, letting you jump among Economy, Tow, Street, or Race maps without missing a beat.
- Sports a heavy-duty knurled aluminum knob with crisp detents that grip your fingers and deliver a sleek, satisfying click every turn.
- Plugs pre-terminated pins straight into the factory ECM connector, sparing you any splicing or soldering.
FAQ
Q: How do I hook this switch up to the engine computer?
A: Wiring is straightforward using the designated ECM pins. Route the harness through the driver-side firewall grommet to the ECM, then insert the blue wire into Pin 69 of the gray ECM connector and the black wire into Pin 49 of the gray connector.
Q: Where in the cab should I mount the selector switch?
A: It’s highly versatile. Most owners mount it on the lower dashboard panel, inside the center console, or on a custom switch pod. You only need to drill a small hole to secure the switch shaft.
Q: Will this switch work on an LLY or LBZ Duramax?
A: No, this particular model is only for LB7 engines. Other generations use different ECM pin locations and wiring configurations, so they require a dedicated switch built for their own platform.
Q: Does this switch come with 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 the switch to function; the dial simply navigates those pre-loaded maps.
