2014 Silverado 4.3 210,000 miles and I have had the truck for 2 years. I have started noticing an issue with starting. Doesn't happen every time but it does seem to be a little more frequent now that it has turned a little cooler. I do not know how old the battery is but terminals are tight and clean. Found a Youtuber that said trade relays under the hood(starter/trailer). I did this and the truck immediately started but when I shut it off after a 20 minute drive, it would not start right away. After sitting at work for 8 hours, truck fired right back up with no issues. Anyone ever dealt with this issue? Thanks
Could this all be battery related?