[hcoles]

Hello again Pelicans.
I worry about things. However, when I see something change I figure there must be a reason.
Case - 2006 Chevy Tahoe 160k miles or so...
Volt meter on dash reading about 14 or just above since I owned the car. Recently it jumped up to 15 or maybe slightly above. I checked the voltage using a handheld meter at the battery and a digital meter that plugs into the cigarette lighter. They all seem to be reading close so I believe the 14->15v really is happening.
The high reading doesn't happen until I've been driving for awhile. Then it stays high. Some times it drops to 13 or a bit lower and then goes back to 15 while driving.
I got a new battery yesterday thinking it might be the battery.
The issue is still happening.
I went to my local Napa store and got the charging system "tested". Of course the volts didn't go up to 15v (only read 14.2) while the guy was testing so I didn't buy the new $230 alternator.
I'm thinking of driving it for a few days to see what happens but I don't think the higher volts coming out is right. What do you think?
Thanks,
-Henry