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Diagnostic Fault Information

WARNING: This page is about a different car, the 2009 Saturn Vue. 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
ECM B+ U1876*, U0100 in HPCM U1876*, U0100 in HPCM - -
ECM Ground - U1876*, U0100 in HPCM - -
ECM Wake Up Signal (circuit 5985) U1876* in HPCM, U1814 in BCM U1876*, U0100 in HPCM - -
HSGMLAN + (circuit 2500) 1* U1876*, U0100 in HPCM 1* -
HSGMLAN - (circuit 2501) 1* U1876*, U0100 in HPCM 1* -
* Other modules/DTCs will set with this fault.
1. Scan tool does not communicate with high speed GMLAN device.
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