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Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ B291B 3B B291B 3B - -
Serial Data U1515, B291B 3B B291B 3B U1515, B291B 3B B291B 00
Ground - B291B 3B - -
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