• Installation

  • Shipping

  • Support

  • Rewards

Home > EZ LYNK Auto Agent 3 Tune Package for 2011-2023 GM 6.6L Duramax LML/L5P 2500HD 3500HD
EZ LYNK Auto Agent 3 Duramax tuner with yellow wiring harness for 2011-2023 GM 6.6L diesel
EZ LYNK Auto Agent 3 tune file only for 2011-2023 GM 6.6L Duramax LML L5P
EZ LYNK Auto Agent 3 black retail box packaging with device image on front
EZ LYNK Auto Agent 3 tune file only box packaging with colorful performance graph
EZ LYNK Auto Agent 3 Duramax tuner with yellow wiring harness for 2011-2023 GM 6.6L diesel
EZ LYNK Auto Agent 3 tune file only for 2011-2023 GM 6.6L Duramax LML L5P
EZ LYNK Auto Agent 3 black retail box packaging with device image on front
EZ LYNK Auto Agent 3 tune file only box packaging with colorful performance graph

EZ LYNK Auto Agent 3 Tune Package for 2011-2023 GM 6.6L Duramax LML/L5P 2500HD 3500HD

Checking fitment...
Selected Variant SKU: SPJN-EP13-00004001
$1,399.99
Engine
Year
Tuner - Non-refundable
Quantity In stock

Secure and trusted checkout with

paypalvisaapple paymasteramerican expressdiscoverjcbdiners clubgoogle pay

Product Information +

3-7 Business Days Free Shipping🛈

12-Month Warranty

30-Day Return🛈

Secured Payment

Description Fitment FAQs Shipping & Returns

Please Note

  • All tunes are custom and non-refundable under ANY circumstances.
  • EZ LYNK tuning files require 7–10 business days to create. DO NOT install delete parts early.
  • Do not include TCM Tune.
  • For L5P 2017-2023: Your truck needs CAN BUS PLUG(click to purchase) to operate correctly. Tune levels are adjustable using factory cruise control buttons, no separate SOTF switch required.
  • Important (L5P 2017–2018): Requires a GM E41 ECM unlock service or an unlocked ECM before tuning. (click to purchase ECM 41 unlock kit)
  • You may be charged import fees. Please accept the delivery and contact us at service@spelabautoparts.com to resolve any charges. Thanks!

The EZ LYNK Duramax package delivers a streamlined, cloud-connected solution for tuning and diagnostics on 2011–2023 GM Duramax LML and L5P trucks. Through the Ez Lynk, you can manage performance, monitor data and receive technician support remotely—no cables required.

How the EZ LYNK Duramax Package Works

The Auto Agent 3 connects to your truck’s OBD2 port and links with the EZ LYNK app, giving your technician direct access for updates, troubleshooting and tune delivery via Wi-Fi.

NOTE: Tuning does not support PTO units.

EZ LYNK Duramax Key Features

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.

60-Second Simple Setup:

  • Plug the device into your Duramax OBD2 port.
  • Install the EZ LYNK Mobile App on Android or iOS.
  • Connect via Wi-Fi, and you're all set for Cloud-based vehicle tuning.

Advanced Diagnostic Scan Tool:

  • Connected OBD scan tool for you and your technician.
  • Read and clear Diagnostic Trouble Codes (DTC).
  • Perform recommended functions and install firmware updates over the air.

Cloud-Connected Tune Management:

  • Access and install tune files directly through the EZ LYNK cloud interface.
  • Switch between power levels or towing calibrations anytime, anywhere.
  • Automatic data sync ensures VIN-locked tuning integrity and reliability.

Fleet-Ready Functionality

  • Ideal for both single-truck owners and fleet managers.
  • Share data logs, maintenance reports, and diagnostics remotely.
  • Enable multiple user access for simplified management and communication.

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

Installation

Installation finishes in roughly a minute. Insert EZ LYNK AutoAgent 3 into the vehicle's OBD2 interface, get the EZ LYNK app installed, then pair via Wi-Fi to start configuration. 2017 to 2018 L5P Duramax models require ECM unlocking prior to tuning file installation.

EZ Lynk Installation Instruction
  • 5 stars: 10 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
G
Garrett M

Running this EZ Lynk package on my 2018 Chevy Silverado 2500HD 6.6L L5P paired with my DPF/EGR delete kit. The performance gain is absolute night and day. EGTs dropped dramatically and the truck breathes so much easier now!

W
Wyatt K.

Paired this tuner with SPELAB's straight race pipe exhaust after deleting the DPF filter. The engine tone sounds incredibly crisp and turbo spool is nearly instantaneous. Best setup on the market.

B
Bryce C.

Accidentally submitted the wrong digit on my truck's VIN number during checkout. SPELAB support caught it, verified my door sticker photo, and sent the correct tune. Impressive support!

T
Trevor M.

Not only did it fix my emissions limp mode issues on my L5P, but being able to read and clear engine codes straight from my phone screen is super convenient.

B
Blake R

My 2016 LML was giving me constant DEF heater sensor warnings in winter. Did the complete delete with EZ Lynk tunes and never have to buy blue DEF fluid again. Totally worth it.

K
Kevin Davis

App connects instantly when key is turned. Digital dashboard gauges on my phone update with zero latency. Great piece of tech for my 2018 L5P.

A
Austin W.

Before the DPF delete tune on my 2017 Silverado L5P, I was averaging 14 MPG highway. Now I comfortably hit 18.5 MPG on long cruises. Pays for the tuner in fuel savings pretty quickly!

D
Dylan Carter

Obd cable plugged right in and the tuner fetched the cloud profiles smoothly over Wi-Fi. Combined with my EGR/DPF delete hardware, the truck runs like a dream with zero limp mode issues.

S
Shane P

Blocked off the EGR on my 2013 LML 2500HD and loaded the matching tune file via the Auto Agent app. Intake manifold stays completely clean now and engine temps run significantly cooler when towing.

C
Colton Hayes

My 2015 LML was constantly going into regen cycle and choking on DEF system codes. Flashed the delete tunes via EZ Lynk after deleting the DPF. No more check engine lights and throttle response is super snappy!

S
Scott

so I already have a 2015 LML Duramax 3500 that has already been tuned and deleted, but I really don’t want a soft switch. I wanna be able to just manually change between the tunes when necessary what are my options and thank you

SPELAB

Thank you for your inquiry. What tuning equipment are you currently using? What are the specific tuning options you are looking for? Have all the emission control devices been removed from the vehicle? We will make product recommendations based on these factors. For further information, please contact us at: (service@spelabautoparts.com ).

N
Noah

Hey, I’m wondering how the SOTF tune packages works. I’m thinking about purchasing the SOTF package with full support. Does that mean I have unlimited access and do I also get to pick the tunes ? I’m interested in a hiss tune and some tunes within the 25-200hp tune range.

SPELAB

Thank you for your inquiry. Yes, there is no time limit on this product. However, it is only valid for a single vehicle. For further information, please contact us at: (service@spelabautoparts.com ).

C
Carlos Alapisco

Hello, does the EZ Lynk tuning software include TCM and Transmission tuning for a 2021 GMC L5P?

Thank you!

SPELAB

Thank you for your inquiry. Do not include TCM and Transmission Tune. For further information, please contact us at: (service@spelabautoparts.com ).

S
Steven Rakow

Do u offer just the tunes I have the auto agent 3 and the shift on the fly

SPELAB

Thank you for your inquiry. Please check the ‘Only SOTF Tune with Full Support’ option in this link to see if it is the tune file you require. For further information, please contact us at: (service@spelabautoparts.com ).

B
Blake

2016 lml, do you offer hiss tunes w ez lynk? What about trans tunes? Is it $1399 and I get multiple pwr hiss tunes or ?

SPELAB

Thank you for your inquiry. We have EZ Lynk, but we don’t have Trans Tunes. For further information, please contact us at: (service@spelabautoparts.com ).