replaced batteries

[jmartinez]

hi everyone went out to start my truck last week thought it was the batteries so i went and bought new ones got back from work this week drove it a couple of days and this morning the truck died while i was driving it will a diesel die if the alternator is bad and how do you test the alternator and when i turn the key on and hold the odometer button the batterie meter reads 11volts any help would be appreciated charging batteries now

[krazeehorse]

With the vehicle running and a good alternator and voltage regulator (internal) working properly you should show 14 to 15 volts. I would use an external multi-tester and check at the battery terminals. If you can watch the meter and turn on your headlights you should see a very quick momentary drop in voltage and it should return to whatever it was reading in that 14-15 volt range.