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Reply To: Sierra 1500, highway shudder under light load at any speed.

October 13, 2021 at 7:40 pm #675634
scrambledeggs
Participant

You are correct. Thank you for your response. I called the dealership, took it in. In less than 2 hours they flushed the transmission and filled with new fluid. Even out of warranty there was no charge. Now runs like new. I was told that GM is now going back to the 8 speed and dropping the 10 speed due to excessive problems.

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