Collection: 2011-2016 Duramax LML

2011–2016 Duramax LML parts and systems are built around GM’s first DEF-equipped 6.6L diesel platform.
These model years introduced significant changes to emissions integration, high-pressure fuel delivery, and electronic control strategies compared to earlier Duramax generations.

This collection groups products intended to align with the factory architecture of LML-equipped trucks, helping users source compatible components for service, maintenance, and modification.

Platform Overview

The LML Duramax represents a major transition in GM’s heavy-duty diesel lineup. The introduction of SCR/DEF systems, revised fuel system components, and updated ECM logic changed how supporting hardware and control components interact with the engine.

Key platform considerations include:

• ECM control strategies specific to LML calibration
• DEF and emissions system integration
• High-pressure fuel system design
• Turbocharger and exhaust control behavior

Component selection should account for these changes to maintain proper operation.

Product Categories in This Collection

This collection includes components commonly required for the 2011–2016 Duramax LML platform, including:

• Tuning devices and calibration-related hardware
• Exhaust systems and exhaust components
• EGR-related service and upgrade components
• Fuel system support and reliability hardware
• Supporting electrical, sensor, and control components

Products are organized based on vehicle compatibility and system application.

System Compatibility Considerations

The LML platform relies on close coordination between engine control, fuel delivery, emissions systems, and transmission logic. Installing components without accounting for these interactions can introduce drivability issues or fault conditions.

This collection is structured to assist users in identifying components that align with:

• OEM-style electrical interfaces
• Factory mounting locations
• Platform-specific control strategies

Intended Use

This collection is intended for owners, technicians, and shops working with 2011–2016 Duramax LML trucks who require accurate fitment and platform-aligned components.

Products listed here are grouped by compatibility and system application.

The 2011–2016 Duramax LML platform requires careful component selection due to its emissions architecture and updated control systems.

This collection provides access to parts and systems intended to align with those requirements.

Explore the collection below.