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Revitalize your GM Duramax LLY with our expert FICM Refurbishment & Maintenance Service. Enjoy enhanced performance and reliability thanks to our comprehensive service that includes preventative maintenance and unique on-engine testing. Trust us to ensure your module's peak operation with before/after footage demonstrating our quality workmanship. Starting at $257.50, we're set apart by our proven process, ensuring your Duramax runs smoother than ever.