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This automotive diagnostic video explores a 2016 GMC Canyon 3.6 with an engine light and U0109 code indicating loss of communication with the Chassis Control Module. Follow along as the mechanic performs diagnostic tests to identify the underlying issue, only to discover that necessary replacement parts are on backorder. Learn about communication module troubleshooting in modern vehicles through this real-world repair scenario from South Main Auto Repair LLC, complete with professional insights and practical diagnostic techniques for automotive electrical systems.
