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Home >> Cadillac >> 2016 >> ELR >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Data Communication System - DTC B1000 To DTC U183B >> Diagnostic Information and Procedures >> DTC U180A: Electric A/C Compressor Control Module High Speed CAN Bus Off >> Circuit/System Description
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Circuit/System Description

The high speed GMLAN serial data circuits are serial data buses used to communicate information between the devices. The high speed GMLAN serial data circuits also connect directly to the data link connector (DLC) for programming purposes.