The GM Duramax EZ LYNK Tune Package provides a simple, cloud-connected tuning and diagnostic solution for LMM, LML, L5P and LM2 Duramax engines from 2007.5-2023. Using the EZ LYNK AutoAgent 3, technicians can install performance tunes, monitor live engine data, and receive remote support from a tuner without needing a laptop or handheld programmer. Everything runs through the EZ LYNK mobile app and cloud platform, making Duramax tuning faster and easier to manage.
Chevrolet Silverado 2500HD / 3500HD, GMC Sierra 2500HD / 3500HD
2007.5-2010
6.6L Duramax LML
Chevrolet Silverado 2500HD / 3500HD, GMC Sierra 2500HD / 3500HD
2011-2016
6.6L Duramax LML
Chevrolet Silverado 3500HD Cab & Chassis
2011-2014
6.6L Duramax L5P
Chevrolet Silverado 2500HD / 3500HD, GMC Sierra 2500HD / 3500HD
2017-2023
3.0L Duramax LM2
Chevrolet Silverado 1500, GMC Sierra 1500
2019-2022
Important (L5P 2017-2018): Requires a GM E41 ECM unlock service or an unlocked ECM before tuning.
LM2 Requirement: Truck must use the E46 ECM.
Not Compatible With: E66 ECM or Global B electrical architecture (some late 2022 trucks).
Technical Specifications
Specification
Detail
Device
EZ LYNK AutoAgent 3
Connection
OBD2 Plug-in Interface
Communication
Wi-Fi connection to EZ LYNK mobile app
Mobile App Support
iOS 12.0+ and Android 8.0+
Tune Delivery
Cloud-based remote tune installation
Diagnostics
Real-time data monitoring and logging
DTC Support
Read and clear diagnostic trouble codes
Updates
Over-the-air firmware and calibration updates
Key Features
Plug-and-Play AutoAgent 3 - Connects directly to the truck's OBD2 port and creates a wireless link with the EZ LYNK mobile app for tuning and diagnostics.
Cloud-Based Tune Management - Tuners can remotely send calibrations, updates, and troubleshooting assistance through the EZ LYNK cloud platform.
Built-In Diagnostic Scanner - Allows users to read and clear DTC codes, monitor engine sensors, and record data logs for troubleshooting.
Live Engine Data Monitoring - View real-time parameters such as boost, fuel pressure, temperatures, and load directly from a smartphone or tablet.
Switch-On-The-Fly (SOTF) Support - A physical SOTF switch is included with SOTF tuning up until 2017. 2017-2023 L5P trucks use factory steering wheel buttons to switch power levels without installing an external switch.
VIN-Locked Calibration Security - Tune files are synced through the cloud and locked to the vehicle VIN for calibration protection.
Fleet Monitoring Capability - Supports multiple users and vehicles for remote logging, diagnostics, and maintenance tracking.
Performance Benefits
Remote Tuning Access - Allows technicians to install or update tune files without sending the truck to a tuning shop.
Improved Diagnostics - Live monitoring and data logging help identify issues with sensors, fuel system performance, or engine operation.
Clean Installation - No wiring or additional modules required beyond the AutoAgent connected to the OBD2 port.
Flexible Tune Switching - Supports multiple calibrations such as tow tunes, economy tuning, or higher power levels depending on the tuner.
Installation takes about one minute. Plug the EZ LYNK AutoAgent 3 into the truck's OBD2 port, download the EZ LYNK mobile app, and connect through Wi-Fi to begin the setup. For 2017-2018 L5P Duramax trucks, the ECM must be unlocked before tuning files can be installed.
Frequently Asked Questions
Do I need a laptop to use the EZ LYNK system?
No. All tuning, diagnostics, and data monitoring are handled through the EZ LYNK mobile app using a smartphone or tablet.
Can a tuner send updated tunes remotely?
Yes. The EZ LYNK cloud platform allows technicians to send updated tune files, review logs, and provide troubleshooting support remotely.
Do L5P trucks need a switch for changing power levels?
No. 2017-2023 L5P trucks use the factory steering-wheel controls for Switch-On-The-Fly tuning.
Does this system work with all 3.0L Duramax trucks?
It fits 2019-2022 Silverado and Sierra 1500 trucks with the LM2 3.0L Duramax using the E46 ECM. It does not work with trucks using the E66 ECM or Global B electrical architecture.
Is the EZ LYNK system compatible with PTO-equipped trucks?
No. Tuning support is not available for trucks equipped with PTO units.
2007.5-2010 Chevrolet Silverado/GMC Sierra 2500HD, 3500HD Pickup (LMM)
2011-2014 Chevrolet Silverado/GMC Sierra 2500HD, 3500HD Pickup (LML)
2011-2014 Chevrolet Silverado/GMC Sierra 3500HD Cab & Chassis (LML)
2015-2016 Chevrolet Silverado/GMC Sierra 2500HD, 3500HD Pickup (LML)
2017-2019 Chevrolet Silverado/GMC Sierra 2500HD, 3500HD Pickup (L5P)
2020-2021 Chevrolet Silverado/GMC Sierra 2500HD, 3500HD Pickup (L5P)
2022-2023 Chevrolet Silverado/GMC Sierra 2500HD, 3500HD Pickup (L5P)
At Tuner Depot, we understand the importance of timely delivery for your performance parts. We're committed to
ensuring a seamless shipping experience, striving to dispatch your orders with utmost efficiency and speed.
Our Shipping Policy: Our aim is to dispatch all orders within two business days, providing you
with a quick and efficient processing time. However, unforeseen circumstances beyond our control may
occasionally impact shipping times.
Factors Affecting Shipping:
Weather Conditions: Adverse weather conditions such as rain, snow, or sleet may affect
delivery timelines. We will make every effort to minimize any delays.
Holiday Periods: Please note that our shipping center will be closed during holidays. We
will resume shipping promptly on the next business day. Allow for potential delays during peak seasons, but
rest assured, we will keep you informed every step of the way.
Staff Availability: Unforeseen circumstances can occasionally affect our staffing levels,
possibly leading to minor delays. We are committed to swiftly resolving any issues to maintain our high
standards of service.
We genuinely appreciate your understanding and patience during any unexpected obstacles. Be assured that we
will utilize every resource available to deliver your performance parts promptly.
Warranty
Hardware components are covered by Tuner Depot's standard warranty. Tuning devices and software carry
manufacturer warranty terms. Use of these products will void your vehicle's factory warranty. Please confirm
with your manufacturer before installation.
Off-Road Use Only
These products are intended for off-road, race, and competition use only and may not be legal for use on
public highways where emissions laws apply. Check your local and state regulations before purchase.
Tuner depot was very helpful I thought I screwed up on the tune part and flashing the ecm but there customer service told me I didn’t mess it up and helped me through it but one thing for sure is nothing to do with tuner depot but no one every tells you on a first time doing one of these trucks the amount of hours it takes it took me almost 30 hours which if I had the right tools and confidence I could of probably cut it down to about 20 but kit works great it’s got awesome power now and I’ll be doing the down pipe very soon to I highly recommend just buying it and getting it over with because the truck is still very quiet almost like it’s a notch above stock
Just got them installed on my truck yesterday and cannot believe the increase in performance! Can’t wait to take it on a road trip already see more power increase and fuel mileage. Unbelievable would do it again tomorrow!
I purchased the efi live sotf tunes along with Dpf delete kit, dpf was good quality, tuner worked with me and not only sent my autocal loaded with a sotf tune but also sent me a few single tunes to use until I installed the switch, the only negative was that 130hp was the max power tune single or switch on the fly, but over all I was pretty happy and service was very good throughout.
Could have come with some kind of directions. Made it through it ok but a little direction would have been nice. Overall everything works as it should.
Before installing never had a code after install getting low fuel rail pressure code under load. If I keep RPMs up just a little ( by switching to manual shift and never come out of 5 gear Allison 6 speed trans) will work fine . If u shift to 6th gear lower RPM as soon as u go up a little incline it starves for fuel and goes into reduced power mode. But if u mash the excelsior and down shifts it will take off like a rocket.
Muffler has great sound, no restrictions. The best part of the whole deal was the outstanding service and shipping that Tuner Depot provided. Would definitely use them again.
Couldn’t be happier with the price. The product is on point. The shipping was fast and easy and the installation was great. Can’t speak. Highly enough of tuner depot will be ordering again for future purchases guaranteed