Yes, Dielectric Grease is a no-no for high voltage contacts.
HVIL is low voltage, but is often in the same connector for high voltage. Gotta be tidy in there.
I wrote this response to another member who had that P0A0A code.
If you did not find it, the trouble shooting section for P0A0A is at this path in the computer that you installed the service manual:
Please also see this post:
The TCM P1A0A is an immediate shut down code for the TCM. I would suspect when the P0A0A happened, this could have also happened.
The PCM P0AA0 is a postive contactor code. Might have been caused by the P0A0A code.
The PCM P2613 is a refrigerant control valve code.
The APIM B1215 is not listed. But I would not think it would cause an SSN or a SSN would invoke the APIM code.
The BodyCM B1D00 and B1D01 is that your headlight low beams are disconnected, burn out, or shorting to 12V.
The RFA B1327 is not listed. But i has something to do with the door locks, or locking the vehicle. Is the battery dead in the key fob?
The ACM U2100 is from a module not being programmed correctly. Did you have the modem upgrade performed recently?
The ACM U0155 is a loss of communication with the Instrument Panel Cluster.
Lower Battery Drain
Upper Battery Drain