Hello fellow GM truck people. My truck was starting to have some slow cranking cold starts and some off and on weird things happening like the service trailer brake and service 4wd popping up here and there. Also had the radio act a little weird one morning where the area of the radio presets was all completely blank. With the slow cranking cold starts, I figured it was time to have the battery load tested at the auto parts store. Had it tested and it said it failed and didn't have the CCA. Purchased one and installed it last night. I just purchased my 2016 silverado 2500HD back in March with 80k miles. I now have 86k on it. When I got the old battery out I saw it was an AC Delco battery and it has the date of 8/8/2016. I've never seen an original batter last that long. Wow! And crazy how much these batteries cost now. took right at a half hour with all the surrounding things that had to get removed to get the battery out. I did get a 800CCA AGM battery replacement for it. I'm hoping that replacing this battery will stop all of the weird things from happening now. I'll update if that solved the issues that I had. It definitely cranked and started alot quicker.