I’ve done some searching here but looking for some guidance on what’s next. The other day I drove to work - truck was running fine. At the end of the day I came out and the started was just clicking when I tried to start it. I assumed dead battery and had a coworker try to boost me. (I had the radio reset and was getting the fluttering gauges). He has a civic and even with his car running and hooked up to boosters the pathy would just barely turn over one or two times. So I replaced the battery - and the truck started right up! Drove for 30 minutes. Stopped and let it sit for about an hour. Started up fine again and drove another 30 mins. I left it overnight and when I tried starting it again nothing but clicks. I have cleaned and even replaced a terminal as it was a bit corroded. Still clicks and I’ve have the trickle charger on it all night.
It’s not just one click but like a machine gun sound when you hit the key.
Does this sound like a starter? Or should I be checking other things first?