Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
have you had the other battery tested? a bad cell in a battery can cause those symptoms
you said 14v all over so im assuming both batteries and alt. what about with a/c full blast blower motor full blast and high beams on. to put it under a heavy load
this will increase the load and truely test the charging system
then it sounds like its operating at full strength. when did the dash lights stop working?
do the guages work?
i would try changing the other battery even if it tested good. it may be week causeing an abnormality in the system make it think its not charging.
that will work too to test the system.
sometimes parts come in bad things do happen. how does it seem with the different battery guage lights working?
then if definitely sounds like you have a couple bad alternators i would try with a new good manufacturer.
if you could take a moment and leave me a positive rating it would be appreciated.