General Motors is addressing an issue that may cause check engine lights on 2020/2021 Diesel Silverado and Sierra pickups. Both 3.0L and 6.6L Diesel Duramax engines could have an error related to the emission and/or exhaust fluid systems. Technical Service Bulletin: #21-NA-07 Release Date: 1/20/2021 Vehicles Covered Under This TSB 2020 & 2021 Chevrolet Silverado… Continue reading New TSB Issued For Duramax 3.0L LM2 and 6.6L LP5 Diesel P206B, Emission & Exhaust Fluid Errors
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