Two problems related to battery dead have been reported for the 2018 GMC Acadia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 GMC Acadia based on all problems reported for the 2018 Acadia.
When shutting the Acadia off it prompts a message saying must be in park. It is in park but computer is not recognizing it. This forces you to leave car running. If you dont then your battery will go dead. When speaking to local dealership they are aware of issue but dont know anything to resolve it. Customers shouldn't have to pay for this since it's a safety issue.
Known dash prompting me to shift into park when the indicator lights show its in the park position so the engine shuts off but dashboard lights stay on and won't stop until battery is dead.