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6.6L Duramax Diesel & Allison Powertrain (L5P/MGM)

Technical powertrain discussion specifically for the 2020+ L5P Duramax Diesel Engine and 10-Speed Allison Transmission combination on the 2020 through 2024+ Chevrolet Silverado 2500 / 3500 or 2020 GMC Sierra 2500 / 3500


169 topics in this forum

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  1. 2024 3500 oil leak 1 2 3

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  2. Oil Filter

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  3. diesel fuel additives

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  4. 10L1000 Service

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  5. Oil Leak 2023 3500

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  6. 2020 Silverado 2500 HD

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  7. Need Deleted L5P Advice 1 2 3

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  8. High Idle 1 2

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