Reroute & Resonator Kit for 6.6L Duramax Chevy Silverado GMC Sierra
Reroute & Resonator Kit front view
Reroute & Resonator Kit installation kit
Reroute & Resonator Kit included parts
EGR Performance Reroute & Resonator Kit
Reroute & Resonator Kit for 6.6L Duramax Chevy Silverado GMC Sierra
Reroute & Resonator Kit front view
Reroute & Resonator Kit installation kit
Reroute & Resonator Kit included parts
EGR Performance Reroute & Resonator Kit

Reroute & Resonator Kit for 6.6L Duramax LLY LBZ LMM Chevy Silverado & GMC Sierra (2004.5-2010)

$54.99
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Details

Duramax 6.6L reroute & resonator kit near you! In stock — USA warehouse, ships fast.

Fits Chevy Silverado & GMC Sierra 2500HD/3500HD Duramax 6.6L 2004.5-2010 (LLY/LBZ/LMM). Cuts blow-by, cools intake, boosts horsepower — easy bolt-on.

Brand Model Year Engine Model
Chevrolet Silverado 2500HD / 3500HD 2004.5–2005 6.6L Duramax LLY
Chevrolet Silverado 2500HD / 3500HD 2006–2007 6.6L Duramax LBZ
Chevrolet Silverado 2500HD / 3500HD 2007.5–2010 6.6L Duramax LMM
GMC Sierra 2500HD / 3500HD 2004.5–2005 6.6L Duramax LLY
GMC Sierra 2500HD / 3500HD 2006–2007 6.6L Duramax LBZ
GMC Sierra 2500HD / 3500HD 2007.5–2010 6.6L Duramax LMM
✅ Exact Fitment Guarantee | If you are unsure about compatibility, please contact us at service@egrperformance.com with your VIN number.
The Reroute & Resonator Kit for the 6.6L Duramax is a direct bolt-on upgrade for Chevy Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks built from 2004.5 to 2010 with LLY, LBZ, or LMM engines. This all-aluminum kit reroutes crankcase blow-by away from the factory intake and seals the intake resonator port, so your turbo and intercooler get cooler, cleaner air. The payoff is a steadier idle, crisper throttle response, less oil buildup in the intake and intercooler, and a small but real gain in power and fuel economy. Many owners also notice lower oil consumption between changes and a much cleaner engine bay. Installation takes about an hour with basic hand tools — no cutting, no drilling, no tuning. Whether you tow heavy loads, daily-drive your diesel, or want to keep your Duramax strong well past 300,000 miles, this is one of the smartest upgrades you can make. Keep reading for the full fitment list, installation overview, and long-term maintenance tips.
Shipping Details

Ontario CA / Springdale OH / Newark NJ
Package List

Complete Package Contents

  • 1x Aluminum PCV Reroute Port Fitting
  • 1x PCV Port Plug
  • 1x Resonator Plug
  • 1x Set of Gaskets
  • 1x Complete Hardware Kit
Delivery Time

2-5 working days inland in the United States
Attention
Legal Disclaimer EGR DPF Delete Offroad Use Only

LEGAL DISCLAIMER

This product may NEVER be installed on a vehicle registered for highway or public street use. By installing this product onto your vehicle, you assume all risk and liability associated with its use. It is your responsibility to make sure your vehicle complies with all federal, state, and local emissions laws.

Federal and many state and local laws prohibit the removal, modification or rendering inoperative of any part of the design affecting emissions or safety on motor vehicles used on a public street or highway. Violation may result in a fine of up to $32,500 per vehicle (or possibly higher depending on changes in the law). All civil penalties and fines for removing your vehicle's emissions equipment are the sole responsibility of the end user.

No other applications besides off-road competition racing use are intended or implied. Depending on where you live, additional restrictions may apply. Check all applicable laws before installing or using.

Not available for sale or use in the state of California, Colorado and Arizona.

Product details

Product Overview

  • The Reroute & Resonator Kit replaces the restrictive factory crankcase ventilation routing on GM Duramax 6.6L diesel engines.
  • It plugs the unused resonator port in the intake and reroutes crankcase blow-by away from the intake tract.
  • That keeps oil vapor, soot, and moisture out of your turbo, intercooler, and intake.
  • The result is a cleaner intake charge, cooler air, a steadier idle, and a healthier engine.
  • Everything bolts on with basic hand tools — no cutting, no wiring, no tuning.

Ideal For

  • Towing and Hauling: Heavy loads spike crankcase pressure. A reroute keeps oil vapor out of the charge air, so your turbo and intercooler keep delivering consistent boost on long grades.
  • Daily Driving: A cleaner intake means a smoother idle, crisper throttle response, and less oil consumption between oil changes.
  • Off-Road Use: In dusty or muddy conditions, a vented reroute keeps the intake sealed against crankcase contamination and helps protect the air filter.
  • Commercial Vehicles: Fleet 2500HD/3500HD trucks spend less time on intake cleaning and part replacement when blow-by is kept out of the engine.
  • Engine Performance Upgrades: Pairs perfectly with a Duramax oil catch can, cold-air intake, tuner, or upgraded turbo by keeping oil out of the charged air path.
  • Long-Term Vehicle Ownership: Less oil and carbon in the intake means cleaner valves and a longer-lived turbo and intercooler — a smart move for 300,000-mile ownership.

Core Advantages

  • Increased Horsepower and Torque: Rerouting blow-by out of the intake helps the engine breathe cleaner, denser air, improving throttle response and supporting modest power gains — especially when paired with a tune.
  • Improved Fuel Efficiency: A cleaner, more consistent air charge helps the engine run closer to its optimum, which supports better fuel economy over time.
  • Reduced Engine Temperature: Keeping oil film off the intercooler core improves heat rejection and helps hold down charge-air temperatures under load.
  • Extended Engine Life: With oil vapor, soot, and moisture kept out of the intake, your turbo, intercooler, and valves stay cleaner and last longer.
  • Direct Bolt-On Installation: Uses factory mounting points and existing hose connections — no cutting, drilling, or tuning required.
  • All-In-One Kit: Includes the reroute port, resonator plug, gaskets, and hardware, so there is nothing else to buy.

Technical Specifications

  • Material: CNC-machined sturdy aluminum for excellent heat and pressure resistance
  • Finish: Corrosion-resistant machined aluminum finish
  • Weight: Approx. 0.9 lb (full kit)
  • Dimensions: Approx. 7" × 5" × 3" (kit packaging)
  • Warranty: 1 Year Limited Warranty against manufacturing defects

Why Choose EGR Performance

  • Premium Quality Materials: CNC-machined aluminum built to handle engine-bay heat, vibration, and pressure.
  • Precision Engineering: Ports and plugs machined to factory tolerances for a clean, leak-free seal.
  • Rigorous Testing: Every kit is validated across LLY, LBZ, and LMM applications before it ships.
  • Dedicated Customer Support: Email us at service@egrperformance.com
  • Fast Shipping from USA Warehouse
  • 1 Year Limited Warranty

Troubleshooting and Problem Solving

Common Issues After Installation

  • Check Engine Light
  • Rough Idle
  • Reduced Power
  • Oil Smell in the Cab
  • Oil Mist Around Fittings
  • Whistling Noise from the Intake

Error Code Solutions

  • P0101: Mass Air Flow (MAF) sensor performance — usually caused by an unsealed intake opening. Verify the resonator plug is fully seated and all ports are closed.
  • P1101: MAF sensor out of self-test range — confirm the intake tube is sealed and no hose was left disconnected during installation.
  • P0299: Turbocharger underboost — inspect all CCV/PCV and charge-air hoses for loose clamps or a disconnected line.

How to Reset Check Engine Light After Installation

  1. Verify every fitting, plug, and clamp is properly sealed.
  2. Use an OBD-II scanner to read and clear the stored codes.
  3. Drive 30–50 miles to complete the drive cycle.
  4. If the light returns, re-check all connections — repeated codes should never be ignored.

What to Do If Your Vehicle Loses Power After Installation

  • Inspect all hose clamps and fittings for looseness or leaks.
  • Confirm the resonator plug did not pop out of the intake.
  • Make sure the vent line is not kinked, pinched, or crushed.
  • If using a catch can, drain it and confirm the can is not blocking flow.
  • If the issue persists, return to the factory routing and email service@egrperformance.com for support.

Long-Term Maintenance Tips

  • Regular Inspection: Every 5,000–10,000 miles — inspect fittings, hoses, and clamps for cracks, looseness, or oil residue.
  • Routine Maintenance: If routed to a catch can, drain collected oil every 2,500–5,000 miles (more often with heavy towing). If vented, clean or replace the breather filter yearly.
  • Wear Parts Replacement: Replace vent hoses and clamps every 2–3 years, or as soon as they show cracking or hardening.
  • Hardware Check: Re-snug all bolts at about 1,000 miles after installation, then at every oil change.
  • Storage Tips: If the truck sits for long periods, cap the vent line to keep moisture and debris out.
  • Warranty Reminder: "Following these maintenance guidelines will keep your 1 Year Limited Warranty valid."

Vehicle Fitment

This CCV/PCV reroute kit is engineered for the GM Duramax 6.6L turbo-diesel found in Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD pickups built from 2004.5 through 2010, covering all three engine generations: LLY (2004.5–2005), LBZ (2006–2007), and LMM (2007.5–2010). Installation is a true bolt-on — no cutting, drilling, or permanent modification is needed. Note that some early-build 2006 trucks still carry the LLY engine, and 2007.5 marks the switch to the LMM, so always confirm your engine code. This kit does not fit 2011+ LML/L5P trucks, 2001–2004 LB7 engines, gas-powered trucks, or medium-duty Kodiak/TopKick chassis. Trucks with aftermarket intake systems may need a different plug — check before ordering. Emissions note: this kit is not CARB-certified; if your state follows California rules, verify on-road legality before installing. For 100% fitment confirmation, please send your VIN number to service@egrperformance.com.

  1. Dispatch Time: Orders will be shipped within 24 hours after successful payment.
  2. Delivery Time: 2-5 business days after dispatch (delivery speed depends on proximity to warehouse location).
  3. Return Window:7 days for unsatisfactory items45 days for quality-related issues
  4. Refund Processing: Refunds will be processed back to your original payment method within 2-4 business days after receiving the automated refund confirmation email (subject to bank verification).

What is a Reroute & Resonator Kit?

It replaces the factory crankcase ventilation (CCV/PCV) routing on GM Duramax 6.6L diesel engines. It plugs the unused intake resonator port and reroutes crankcase blow-by away from the intake tract. The result is a cleaner, cooler intake charge and a healthier engine.

How does a Duramax CCV/PCV reroute kit work?

Diesel blow-by carries oil vapor, soot, and moisture into the factory intake. This kit seals the intake opening with the resonator plug and vents crankcase gases through the reroute port to a catch can or breather. That keeps oil out of the turbo, intercooler, and intake.

What are the benefits of a reroute kit for a Duramax?

Benefits include a cleaner intake, steadier idle, better throttle response, reduced oil buildup, lower intake temperatures, and a small gain in power and fuel economy. It also makes the engine bay easier to work in.

Will this Reroute & Resonator Kit fit my 2006 GMC Sierra 2500HD Duramax?

This kit fits Chevy Silverado and GMC Sierra 2500HD/3500HD trucks built from 2004.5 to 2010 with the 6.6L Duramax (LLY, LBZ, or LMM). A 2006 Sierra can carry either the LLY or LBZ — both are covered. For 100% confirmation, send your VIN to service@egrperformance.com.

Is a CCV reroute kit legal in my state?

This is a mechanical CCV/PCV reroute and is not CARB-certified. Most states allow it, but California and states following CARB rules may restrict it for on-road use. Check your local emissions regulations before installing.

Will a CCV reroute kit void my warranty?

Aftermarket parts do not automatically void a warranty; a claim must show the part caused the damage. This kit requires no permanent modification, so your truck can be returned to stock easily.

How much horsepower does a reroute kit add?

A reroute kit is not a big-dyno-number part. Its real gains are reliability, response, and consistency; modest power gains are most noticeable when combined with a tuner and intake upgrades.

How much MPG gain can I expect from a reroute kit?

Expect a small, real improvement rather than a large jump. A cleaner air charge and steadier combustion can help fuel economy, especially when towing or in stop-and-go driving.

Do I need a tuner for a Duramax reroute kit?

No. The kit is completely mechanical and works with a stock ECM. A tuner is optional and can amplify the benefits if you want maximum performance.

How long does it take to install a Duramax reroute kit?

Most owners finish in about 30–60 minutes with basic hand tools. No cutting, drilling, or wiring is required.

Can I install a Duramax reroute kit myself?

Yes, if you are comfortable working under the hood. The install is straightforward; professional installation is recommended if you have any doubts. No printed instructions are included, so contact service@egrperformance.com for guidance.

How often should I maintain a Duramax CCV reroute kit?

Inspect fittings and hoses every 5,000–10,000 miles. Drain a routed catch can every 2,500–5,000 miles, and replace hoses and clamps when they crack or harden.

What is the warranty on this kit?

The kit comes with a 1 Year Limited Warranty against manufacturing defects. Following the maintenance guidelines keeps the warranty valid.

Do you offer technical support?

Yes. Email us at service@egrperformance.com and our team will help with fitment, installation, or troubleshooting questions.

How long does shipping take?

Orders ship fast from our USA warehouse. Shipping time depends on your location; you will receive tracking as soon as your order leaves.

Can I return this kit if it doesn't fit?

Yes. If the kit does not fit your truck, contact service@egrperformance.com with your order number and VIN before installing. We will help you find the right part or process a return.

Installation Information

Installation Difficulty Level

Easy

Estimated Installation Time

0.5–1 hour

Required Tools

  • Socket Set
  • Torque Wrench
  • Screwdrivers
  • Pliers
  • Shop Rags (to catch any oil drips)

Step-by-Step Installation Overview

  1. Disconnect the factory CCV/PCV hose from the intake tube and the valve cover outlet.
  2. Install the resonator plug into the factory resonator opening and press it fully into place.
  3. Install the reroute port onto the valve cover outlet and route the vent hose to your catch can or vented breather.
  4. Check every connection — confirm the plug is sealed and all hose clamps are tight.
  5. No ECM reset needed — this is a purely mechanical install. Start the engine and inspect for leaks.

Important Note:No printed installation instructions are included. Professional installation is highly recommended. If you need technical support, please contact us at service@egrperformance.com.