RV particulars:
Driveline (8.1 Vortec, 4L80E GM 4-speed Auto):
Miles: 18,500
Year: 2001
Break Down Description: Alternator putting out 15.5 volts (to high)
Symptoms:
Effect: Not sure but could boil batteries, chassis & house
Cause: Appeared to be alternator
Outcome: Replaced alternator and ignition switch
Warrantied the alternator, but the service shop also found a problem with burnt connectors on ignition switch. Said this could have caused the alternator to put out more voltage due to sensing circuit in alternator thinking it needed more.