DTC Descriptor
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.
- DTC U0077
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Control Module Communication Chassis Expansion CAN Bus Off
For symptom byte information, refer to Symptom Byte List .