---tab Description--- Please Note All tunes are custom and non-refundable under ANY circumstances. 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 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. Key Features 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. Platform Compatibility: Web Portal: Access and manage tunes from any browser. EZ LYNK App: iOS 12.0+ and Android 8.0+ compatible for wireless management. Installation EZ Lynk Installation Instruction ---tab Fitment--- 2011–2016 Chevrolet Silverado/GMC Sierra 2500HD 3500HD 6.6L Duramax LML 2017-2023 Chevrolet Silverado/GMC Sierra 2500HD 3500HD 6.6L Duramax L5P ---tab Shipping & Returns--- Fast Shipping Policy Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy Easy Return Policy Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy