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Tvan (not verified)    April 5, 2025 - 6:34AM

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My 2018 Colorado was shuddering around 30k miles. Took it to the dealership they said it’s transmission problem and they wanted 7k to replace the transmission. I asked if it cover under warranty. They said no ‘only the engine’
My solution? I changed the viscosity of the oil. It’s been driving smooth for the most part. It’ll shudder every now and then but I’m at 110k miles now.

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