I have a 99 Ram with a 5.9 L. It started fine and I drove it for a little while. Then all of the sudden, it died. It took awhile to start it but when I put the truck in gear, dies again. Also, the check engine light came on then.

I didnt have a chance to look at it because I was in a hurry to run an errand. My guess is a dead cell in the battery, and or going bad. I will use a meter to check voltage and probably take it out to have a load test done on it. Is there anything I might be missing?

Thanks