Sierra 1500 cranking slow again after one year – where do you find a garage that actually knows GMC trucks?

[keira_lancaster]

I've got a 2018 Sierra 1500 with the 5.3 and I'm already on my second battery for three years, the current one is barely a year old and cranking slower every morning even after long drives, which is making me think the shop I used last time just sold me some generic battery that doesn't have the proper CCA for a full size truck in Dubai summer, and the guy definitely never mentioned anything about AGM or checking the charging system. I've been searching around and keep running into this website battery zone uae that specifically lists GMC Sierra and Yukon on their battery replacement page, which honestly surprised me because most places just treat American trucks the same as any other car. I'd really like to find some Dubai GMC Car Battery Experts who stock the right AC Delco or at least an equivalent AGM that can handle the heat plus the constant AC and electronics load, not just whatever's on the shelf. Anyone here with a Sierra or Yukon actually managed to get a battery that lasted more than two years without breaking the bank, or is that just wishful thinking at this point?