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2000-2014 Duramax, Diesel, & Drivetrain

All GMT-800/900 diesel engine, transmission, and drivetrain specific discussion. Focusing on the 6,6L Duramax V8 & somewhat the 6.0L gas engine. Includes RPO coded engines, LB7, LLY, LMM, LMK, LML, & LGH

465 topics in this forum

  1. Replacement Side Mirrors

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  2. Light issues

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  3. Fuse Plug In Issue

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  4. Radio and OnStar 06 2500HD

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  5. Wiring

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