GMC Acadia Denali 2011: Bought a new battery last year, lasted about 6 months after which remote start stopped kicking in then starting the car from the inside would stutter a lot before finally kicking in. Changed battery through warranty as the alternator is good and charging well but the...

We have a 2017 Acadia Denali. We thought the battery was going bad as it was randomly not starting. Didn't know if it was a parasitic drain or battery going bad. The night before we changed the battery we were driving it and functions were starting to not work properly. i.e. power steering...