One problem related to warnings has been reported for the 2021 GMC Acadia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 GMC Acadia based on all problems reported for the 2021 Acadia.
Instrument cluster malfunction. Entire instrument cluster blacking out every 60 seconds, then rebooting nonstop while driving. While this was occurring, none of the advanced driver assistance systems functioned, nor did the speedometer or other gauges. This occurred while on a trip, and meant having to travel a long distance without having emergency braking, collision warnings or the ability to monitor speed. The car was taken to local dealer and they replaced the entire instrument cluster.
| Automatic Emergency Braking problems | |
| Warnings problems |