GM's Transmission Troubles: Owners Seek Answers Amid Mounting Issues

Thursday, Aug 21, 2025 11:12 am ET1min read

GM's 2023 GMC Sierra 3500 truck owners are experiencing transmission issues despite a recall on the 10-speed automatic transmission. Robert Shafto's truck had already undergone a valve body replacement under warranty, but his new truck experienced another valve body failure within 35,000 miles. GM has yet to provide an estimated date for the required part.

GM's Transmission Troubles: Owners Seek Answers Amid Mounting Issues

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