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What is your question?
Update: New Battery Same Problem My battery has recently started draining overnight. If I plug the truck into a trickle charger it will start in the morning. It starts fine during the day, even if it has been sitting for 8 hours or so while I am at work. If I do not plug it in again in the evening, however, it will not start in the morning. The alternator was replaced less than one year ago and it still creates ~14.5V when the car is running. There are no problems while driving. I had the battery tested and it passed with no bad cells. 12.5 V when off. I checked for parasitic draw on the battery and am consistently getting between 80-100 milliamps with everything off. I pulled all the fuses while checking the draw and no individual fuse or combined fuses dropped the draw to less than 70 milliamps. I am at a loss for what could be causing this. Cold temperatures overnight? It is usually between 30-50 degrees in the morning when I try to start it. Thank you for your help!
How long has your 1994 Chevrolet C2500 had this problem?
A few weeks