Replaced the battery in my 2016 GMC Yukon XL.
Mine uses the H7 battery, but I was told at the store the H6 would also work, it is just a bit smaller.
Job was fairly straight forward. For changing a battery there were a few extra steps, like removing the brace and loosening the coolant reservoir.
Took about 20-30 minutes to remove old battery and install new one.