Remanufactured GM 6.6L Duramax LML diesel long block for verified 2011–2016 Chevrolet Silverado and GMC Sierra 2500HD/3500HD pickup applications. Stock-replacement scope, built from a matching sourced core—not a service to rebuild your exact engine.

Engine price starts at $7,499. A separate $2,500 refundable matching-engine core charge is additional. The listed delivery-variant prices do not include that core charge. Standard coverage is a 1-year unlimited-mile warranty on the engine only; labor is not covered.

Engine price, delivery and additional core

Shipping is free within the Continental United States to commercial addresses with a forklift/dock or terminal pickup. Business without dock (lift gate): +$100. Residential (includes lift gate): +$300. These are lower-48 terms; Alaska and Hawaii require a freight quote before ordering.

Core charge: $2,500, refundable, charged as a separate core item in addition to the engine price. The core charge is refunded when we receive your matching old engine (core). You have 30 days to return it. We pay the return freight: when it is ready, we email you a return label, and you ship the core back on the same pallet your new engine came on.

Fitment — LML pickups only

A VIN character or shared displacement alone is not proof of long-block interchange. LML is the GM engine RPO, not a casting number. Provide the complete 17-character VIN, original RPO/build information, build date, engine identification/broadcast and traceability information, and transmission/emissions configuration. Match the actual head/block and service assembly, mounting and sensor provisions, covers/housings and required transfer components before ordering. If the vehicle has had an engine replacement or swap, its VIN may not identify the installed engine.

GM documents different flywheel-housing seal styles and non-cross-compatible housing machining within affected 2011–2012 LML applications. Verify the actual housing and mating parts; this listing does not promise that every 2011–2016 assembly or external component interchanges unchanged.

Block casting and engine identification

Long-block scope and exclusions

The supplied long block shown in the listing photos comprises an assembled short block with cylinder heads and valvetrain, including the installed rocker assemblies and valve springs, exposed cam/crank timing gears and the visible front oil-pump assembly. The photos show component coverage, not proof of LML identity, an exact model year, new-versus-reconditioned parts or hidden internal specifications.

This is not a complete running or fully dressed drop-in engine. Intake/exhaust manifolds, turbocharger, injectors, injection pump, fuel rails/lines, wiring/ECM and accessories are not included unless separately quoted and agreed. Front/timing cover, valve covers and oil pan are not shown as supplied in the photos; confirm the required transfer components before ordering. No particular new-part brands, upgraded parts, fuel-system conversions, test procedures or horsepower increases are promised.

Standard warranty: 1-year unlimited-mile warranty on the engine only; labor is not covered. Applicable written warranty conditions and exclusions apply. No optional extended warranty or another diesel listing’s mandatory replacement-part rules are included in this offer. Confirm fitment, the written long-block specification, core payment/return terms and delivery selection before ordering.

• Not LGH van, chassis-cab or box-delete applications, including 2011–2012 LGH-equipped HD chassis/box-delete vehicles.
• Chassis-cab, box-delete, van and medium-duty applications are outside this pickup listing, even when a related engine family is used.
• Not LB7, LLY, LBZ, LMM, L5P or L5D; not a cross-generation swap package.
• Not the gasoline 6.6L L8T, the 3.0L Duramax or any non-LML engine.
• No emissions-delete or performance-build claims; retain the correct application-specific emissions and control configuration.

Warranty and ordering confirmation

Identification references: GM 2011 VIN guide; GM 2016 VIN guide; GM flywheel-housing seal bulletin 10-06-01-004B; GM engine identification bulletin. These identify applications and identification limits, not a promise of universal interchange or specific PES build components.