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Transmission Control Module?

Old 05-15-2019, 07:57 PM
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Default Transmission Control Module?

Can someone educate me on what this ecu does?

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Old 05-15-2019, 08:38 PM
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It's the Rear Differential Clutch Control Module.
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Old 05-16-2019, 10:38 AM
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Yep, controls the pump that uses ATF to pressurize the eLSD clutch pack to the left of the diff. Anytime the system is opened up (like replacing the diff) it will need to have the bleed procedure done using GM (or knock-off) hardware. HP tuners and EFI Live can’t help us here...
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