July 2021 it went into power save mode and 10 min later shut down and would not restart. Battery was good when checked so we changed the Alternator. When new alternator was installed the A/C on the Drivers side would not work, we changed the Actuator. That seemed to do the trick for a week or so. I then noticed a drop in Voltage when driving, had the alternator checked and it was fine but battery needed replaced. I replaced the battery. I was still getting voltage drops and when it was checked again was told the alternator was bad. We pulled the alternator, and the battery, bought new ones again, installed them, still no A/C, which is not the main issue. When driving not 20 min after the new alternator and battery was replaced I noticed the voltage dropping to below 13 when I was accelerating and then got "service battery charging system" light and the battery light came on. I pulled over, shut the car off and it went away and I was able to continue driving to work. The truck sat all day and the battery light was off upon driving home, however right before I got home got the "service battery charging system" light again. I have spent so much money on this issue and hope someone has an answer. I have read about the Battery current sensor, the fuse box, and I am at a loss as to what is causing all the issues with this truck. PLEASE HELP!!!