Sierra 1500 4WD V8-6.0L VIN U (2006)
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This table identifies which serial data link that a particular module uses for in-vehicle data transmission. Some modules may use more than one data link
to communicate. This table is used to assist in correcting a communication malfunction between the control module and the scan tool. For the description
and operation of these serial data communication circuits refer to Data Link Communications Description and Operation.