80,000 miles on a 2020 enclave could not shift in drive and transmission

Hello, it certainly sounds like some kind of fault has been detected in the automatic transmission system. The vehicle may be preventing transmission shifting into "Drive" gear in an effort to preserve it and prevent damage from occurring. Hands on testing with proper diagnostic equipment and workshop manuals for reference is needed to find out what is going on with your Enclave. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.