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Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. 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+ U18B5 U18B5 - -
Ignition U18B5 U18B5 - -
Accessory Wake Up Serial Data 2 P24EF, P24F0, P24F1, U1817* U18B5 - -
Chassis High Speed GMLAN Serial Data (+) U0077* U0077, U18B5* U0077* -
Chassis High Speed GMLAN Serial Data (-) U0077* U0077, U18B5* U0077* -
Ground - U18B5 - -
* Other DTCs may set with this fault.
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