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"06 chevy 2500hd duramax throwing u0100 code. Delay in shifting
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Topic starter
Posted : 04/07/2025 8:52 pm
Thank you for contacting UpFix. We don't repair the 2006-2008 A40 Allison TCMs; however, we do reprogram them if there is a software issue. The programming service is non-refundable.
Posted : 04/07/2025 8:54 pm