SALE! Use promo code FS-909 to get FREE SHIPPING & pay NO upfront core.
Some exclusions apply.
Fraser Engines sells to the public & commercial auto shops! Phone Hours: Mon-Fri 8AM-5PM EST. Online ordering & Texting support open 24-7!
Four zero-mile builds for the EcoTec3 6.2L (L86/L87) platform — from an OEM-spec replacement to a fully loaded Fraser Advantage™ DOD/AFM delete. Every option ships with a 3-year / unlimited-mile parts & labor warranty and no upfront core fee.
Inventory is refreshed every 15 days; availability may change during update periods.
Core Policy: This unit requires a returnable core. Free pickup is arranged by Fraser Engines.
Optional 1- to 5-year No-Fault Warranty can be added at checkout — one free replacement no matter the cause. See No-Fault options.
Recommended bundles: Break-In Fluid ($47.99) and Premium Installation Kit ($250).
Fraser Engines has identified that many Active Fuel Management lifter failures are not due to defective lifters, but rather issues with oil pressure or oil control within the AFM system.
The AFM system operates within a normal oil pressure range of 27 PSI to 66 PSI. Activation and deactivation of AFM lifters are controlled by the Valve Lifter Oil Manifold, also known as the VLOM.
In several warranty cases, AFM lifters have been found stuck in a compressed position. This is often caused by the VLOM commanding activation or deactivation at the wrong point in camshaft rotation, rather than a fault within the lifter itself.
Core Policy: This unit requires a returnable core. Fraser Engines provides free core pickup once your old engine is ready.
Optional 1- to 5-year No-Fault Warranty can be added at checkout. See No-Fault options.
Recommended bundles: Break-In Fluid ($47.99) and Premium Installation Kit ($250).
A 6.2L DOD Delete Engine is a modified version of the original 6.2L GM engine where the Displacement on Demand system, also known as Active Fuel Management, has been removed. This improves long-term durability by eliminating the frequent cylinder activation and deactivation that can contribute to premature lifter, camshaft, and valvetrain wear.
Core Policy: This unit requires a returnable core. Free pickup is arranged by Fraser Engines.
Optional No-Fault Warranty available at checkout — see options. Recommended bundles: Break-In Fluid and Installation Kit.
Core Policy: This unit requires a returnable core. Fraser Engines provides free core pickup once your engine is ready.
Extend to a 2- to 5-year No-Fault plan at checkout — see options. Recommended bundles: Break-In Fluid and Installation Kit.
What even is a NO FAULT warranty, and why would you need it if the engine already has a warranty for free? The standard warranty covers defects in the engine. A No-Fault plan gives you one free replacement no matter the cause of failure — installer error, overheating, oiling problems, anything — plus labor reimbursement at published book time.
Labor reimbursement uses published Mitchell or AllData times. One-time replacement applies per covered unit during the elected term.
Specially formulated to protect your new engine during the most critical phase of its life — the initial break-in period. Designed to promote proper ring seating, reduce friction, and prevent premature wear, this high-performance fluid helps ensure maximum longevity, smoother operation, and optimal performance from day one. Trusted by engine builders and recommended by Fraser technicians.
Highly recommended for every new engine installation.
Designed to streamline your engine replacement while protecting your investment from day one. This all-inclusive kit replaces the most commonly worn supporting components that can affect performance, cooling, and reliability after installation.
⚠️ Availability may vary by application. Please confirm availability during order confirmation to ensure this kit can be added to your purchase.
The EcoTec3 6.2L GM V8 (Gen V; RPO L86/L87) powers premium Chevy, GMC, and Cadillac trucks/SUVs with class-leading torque, direct injection, and active technologies. While robust, these engines have a few well-known pain points. Fraser Engines addresses them through precision remanufacturing and targeted upgrades to improve durability, drivability, and long-term reliability.
Why? AFM (2014–2018) and DFM (2019+) lifters can collapse, damaging the cam and causing misfires.
Update: Fraser installs updated lifters and guides. For customers opting to eliminate cylinder deactivation, we offer a complete AFM/DFM delete: non-AFM lifters, matched camshaft, valley cover update, and tuning recommendations for stable 8-cylinder operation.
Why? The direct-injection HPFP and injectors are sensitive to wear and contamination; the cam-driven pump follower can show wear.
Update: HPFP and injectors are tested and replaced as required; cam lobe/follower inspected and addressed. Fuel rails/injector bores are ultrasonically cleaned; new Teflon-coated injector seals installed where applicable.
Why? DI engines don’t wash intake valves with fuel, leading to carbon build-up and airflow loss.
Update: Heads and intake tracts are professionally cleaned; valve faces/seats are cut to spec. We add PCV/vent routing updates and provide service interval guidance (e.g., periodic induction clean) to help slow re-depositing.
Why? Chain stretch, guide wear, or cam phaser noise can affect timing accuracy and idle quality.
Update: New heavy-duty timing chains, guides, tensioners, and an OE-spec or updated phaser. Cam/crank correlation is verified during build and final QA.
Why? Variable-displacement oil pumps and tight DI tolerances demand consistent oil pressure; leaks from gaskets/seals are common with age.
Update: New or updated oil pump, precision-measured bearing clearances, and premium gaskets & seals (front/rear mains, pan, valve covers). Oil passages are hot-washed and brush-cleaned to ensure full flow.
Why? Wear or stuck oil rings can drive oil consumption and compression loss.
Update: Hypereutectic pistons with modern skirt coatings and upgraded ring packs restore ring seal, reduce blow-by, and stabilize oil usage.
Why? Thermal cycling can stress seats/guides and deck flatness.
Update: Heads are pressure-tested, resurfaced, and assembled with new valve guides/seals and precision three-angle seat work. Deck surfaces are finished to MLS-gasket spec.
Why? Overheating accelerates wear and can compromise head gaskets.
Update: Block and head surfaces are machined for optimal gasket clamp; cooling passages are de-scaled and flushed. We recommend OE-quality thermostats/water pumps at install.
Why? Imbalance increases NVH and bearing wear.
Update: Crank, rods, and pistons are dynamically balanced; run-out checked; final assembly blueprinted to tight tolerances.
Why? Oil ingestion via PCV can foul plugs; some engines show vacuum pump seepage.
Update: Revised PCV baffling/valley cover strategy to curb ingestion; vacuum pump inspected and re-sealed or replaced as needed.
| Year(s) | Make | Model | Engine Code (RPO) | Notes |
|---|---|---|---|---|
| 2014–2018 | Chevrolet | Silverado 1500 | L86 | EcoTec3 6.2L; select trims (e.g., LTZ/High Country) |
| 2019–2024 | Chevrolet | Silverado 1500 | L87 | EcoTec3 6.2L; select trims/packages |
| 2014–2018 | GMC | Sierra 1500 | L86 | EcoTec3 6.2L; Denali & select trims |
| 2019–2024 | GMC | Sierra 1500 | L87 | EcoTec3 6.2L; Denali/AT4 & select trims |
| 2015–2020 | Cadillac | Escalade / Escalade ESV | L86 | EcoTec3 6.2L |
| 2021–2024 | Cadillac | Escalade / Escalade ESV | L87 | EcoTec3 6.2L |
| 2015–2020 | GMC | Yukon Denali / Yukon XL Denali | L86 | EcoTec3 6.2L |
| 2021–2024 | GMC | Yukon Denali / Yukon XL Denali | L87 | EcoTec3 6.2L |
| 2018–2020 | Chevrolet | Tahoe (Premier RST / Premier Plus) | L86 | EcoTec3 6.2L on specific packages |
| 2018–2020 | Chevrolet | Suburban 1500 (Premier RST / Premier Plus) | L86 | EcoTec3 6.2L on specific packages |
| 2021–2024 | Chevrolet | Tahoe | L87 | EcoTec3 6.2L; High Country (std), available on select trims |
| 2021–2024 | Chevrolet | Suburban | L87 | EcoTec3 6.2L; High Country (std), available on select trims |
Common applications: Chevrolet Silverado 1500, Tahoe, Suburban • GMC Sierra 1500, Yukon Denali / Yukon XL Denali • Cadillac Escalade / Escalade ESV. We confirm exact fitment by VIN.