[mrolds88]

Possibly. First (and cheapest) thing I would do would be to pull the alternator and clean the terminals and the mounts. Then check everything again. Also check your battery cable connections. I had an S-10 once that did the same thing on a single trip, to the point that it died on me. Pulled the alternator to get it checked, and it put out full output. Work perfectly for the next 120,000 miles. It had a bit of corrosion on the ground.