Introduction
Upgrading your 2011-2016 LML 6.6L Duramax with the SPETUNER CCV Reroute Kit is essential for reducing oil buildup in the intake system, improving performance, and extending engine life. This guide provides a step-by-step installation process for a clean, hassle-free upgrade.
Pre-Installation Preparation
Required Tools
To ensure a smooth installation, gather the following tools:
· Socket wrenches (10mm, 12mm)
· U-joint socket (for difficult-to-reach bolts)
· Long extension bar (to increase reach)
· Long-nose angle pliers (for securing hose clamps)
· Lubricant (for O-ring installation)
· Zip ties (for securing the rerouted hose)
Verify Kit Components
Before starting, ensure your SPETUNER 2011-2016 LML 6.6L Duramax CCV Reroute Kit includes:
· Billet aluminum delete plate
· PCV reroute hose
· Spring clamps
· Block-off plate
Compare the received parts with the bill of materials to avoid interruptions.
Safety Precautions
· Ensure the truck is parked on a stable surface and, if possible, use a hoist for better accessibility.
· Wear gloves to prevent hand injuries and avoid excessive contact with oil residues.
· Allow the engine to cool down before starting to prevent burns from hot components.
Installing the Billet Delete Plate
Step 1: Apply Lubricant to the O-Ring
· Before installing the delete plate, apply a small amount of lubricant to the inner edge of the O-ring.
· This prevents snagging or tearing, ensuring a proper seal.
Step 2: Position and Secure the Delete Plate
· Align the billet delete plate with the factory PCV port.
· Gently push it into place, ensuring the O-ring seats correctly.
· Insert and tighten the mounting bolts evenly. Do not overtighten—the O-ring creates the seal, not excessive torque.
Removing the Factory PCV Hose
Step 1: Locate and Remove the Crimped Clamp
· Find the factory PCV hose connection below the turbo boost tube on the valve cover.
· Use long-nose pliers to remove the crimped clamp securing the hose carefully.
· Once the clamp is off, gently pull the hose end off the fitting.
Step 2: Detach the Hose from the Turbo Intake
· The other end of the PCV hose is bolted to the turbo intake, near the resonator delete plate.
· Loosen the top bolt—this can usually be removed by hand once loosened.
Step 3: Remove the Bottom Bolt
· The lower mounting bolt is harder to access.
· Use a U-joint socket and long extension bar to reach and carefully loosen it.
· Work slowly to avoid stripping the bolt.
Step 4: Lift Out the PCV Hose Assembly
· With both bolts removed, carefully lift the entire PCV hose assembly out of the engine bay.
· Check for any oil residue, indicating how much oil vapor was entering the intake.
Installing the Block-Off Plate
Step 1: Position the Block-Off Plate
· Align the SPETUNER block-off plate with the PCV hose’s original mounting location.
· Ensure it sits flush against the surface to prevent leaks.
Step 2: Secure Using Factory Bolts
· Reuse the factory mounting bolts to secure the block-off plate.
· Thread in the top bolt first by hand, followed by the bottom bolt.
· Tighten both bolts evenly to avoid misalignment.
Step 3: Reposition the Wire Harness Bracket
· When securing the lower bolt, ensure the wire harness bracket is positioned correctly.
· This prevents loose wiring and ensures a clean installation.
Installing the New CCV Hose
Step 1: Prepare the Hose for Installation
· Before attaching the hose, slide a spring clamp onto it, positioning it a few inches back.
Step 2: Attach the Hose to the Valve Cover PCV Fitting
· Carefully push the hose onto the barbed PCV fitting on the valve cover.
· Use long-nose angle pliers to slide the spring clamp into position, securing the connection.
Step 3: Route the Hose Properly
· Route the hose upward, then over and down towards the driver’s side frame rail.
· Avoid placing the hose near hot components (exhaust, turbo) or moving parts (belt, fan).
Securing the Hose and Final Adjustments
Step 1: Secure the Hose with Zip Ties
· Lift the truck using a hoist or jack stand.
· Route the hose to the outside of the frame rail.
· Use the provided zip ties to secure the hose at multiple points.
Step 2: Check for Proper Clearance
· Ensure the hose is not touching any hot components.
· Double-check that it is not near moving parts.
Step 3 (Optional): Install a Catch Can
· Installing a vented catch can further reduce oil vapor buildup, especially for high-performance applications.
Step 4: Final Inspection
· Ensure bolts are tight, hoses are secure, and routing is correct.
· Start the truck, let it idle for a few minutes, and check for leaks.
· Take a short test drive to verify proper operation.
FAQs
Q1: Why should I install a CCV reroute on my Duramax?
✅ Prevents oil buildup in the intake, improving airflow and engine longevity.
Q2: Will this installation trigger a check engine light (CEL)?
✅ No, the SPETUNER CCV Reroute Kit is designed to function without triggering error codes.
Q3: Does this reroute affect emissions compliance?
✅ Check local emissions laws before installing, as requirements vary.
Q4: Can I install a catch can with this kit?
✅ Yes, a vented catch can further reduce oil mist from re-entering the engine.
Final Thoughts
The SPETUNER CCV Reroute Kit is an essential upgrade for 2011-2016 LML 6.6L Duramax owners looking to reduce oil buildup and enhance engine performance.
For more Duramax performance upgrades, explore SPETUNER's full range of diesel modifications, including intake systems, exhaust upgrades, and tuning solutions.
