https://gdpproducts.com/products/gdp411033
EZ Lynk GDP A50 TCM Tuning (2011-2014 LML Duramax) - GDP Products
**MUST HAVE GDP ECM FILES ON THE VEHICLE TO PURCHASE TCM FILES**
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https://runvse.com/ez-lynk-instructions/
EZ Lynk Instructions
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https://www.wcfab.com/i-31645957-2019-2023-l5d-duramax-ez-lynk-5-tune-pack-ecm-tuning.html
2019-2023 L5D Duramax EZ Lynk 5 Tune Pack ECM Tuning
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