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Where is the transfer case control module on 2005 Chevy Tahoe?

The transfer case control module (TCM) on a 2005 Chevy Tahoe isn't a separate, easily identifiable box like some other modules. Instead, it's integrated into the body control module (BCM). Therefore, you won't find a stand-alone TCM. The BCM handles the signals and controls for the transfer case. The BCM itself is typically located under the dashboard on the driver's side.