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Home >> GMC >> 2021 >> Terrain SLT, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communications - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with Low Speed GMLAN Device >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Low Speed GMLAN Serial Data 1 U0100-U02FF* 1 -
Ground (X84 Data Link Connector terminal 5) - 1* - -
* An open between the X84 Data Link Connector (DLC) and the first splice pack/device will only affect the communication with the scan tool.
1. No communication with any low speed GMLAN device
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