My Chevy traverse won’t move in drive or reverse

Hello, the most likely cause is that there is some kind of internal transmission failure occurring. Can't be sure of what isn't working -- could be electrical or could be mechanical and hydraulic. Diagnostic testing will be able to determine if the concern is more easily repairable, or of it would require transmission overhaul or replacement. Locate a skilled technician near you to get some first hand assistance -- try this link to find shops near you. www.repairpal.com/repair-shops