GMC Acadia intermittent adaptive cruise control failure requiring complete vehicle reset on GMC Acadia

Some GMC Acadia owners report experiencing intermittent adaptive cruise control failures that require a complete vehicle reset, often accompanied by the message 'Adaptive Cruise Temporarily Unavailable.' This issue is particularly common in early models of the second generation, specifically from 2017 to 2019. Potential causes for this message include obstructed sensors, electrical problems, faulty software, or mechanical issues. A faulty vehicle speed sensor is a frequent culprit, as it is crucial for the system to accurately detect the vehicle's speed. Additionally, some owners find that a plate installed too close to the radar sensor or a malfunctioning brake pedal switch can lead to the adaptive cruise control cutting out intermittently. To address these issues, it is advisable for owners to check for sensor obstructions, seek professional diagnosis, and test for potential malfunctions with the radar sensor and brake pedal switch. If problems persist, consulting a professional for a thorough diagnosis and repair is recommended.