Where is ac drain hose on Buick enclave?

The AC drain hose on a Buick Enclave is typically located on the passenger side of the vehicle, near the firewall. It is a small rubber tube that extends from the evaporator case to the underside of the car, allowing condensation to drain outside. If you're having issues with water accumulation inside the vehicle, checking this hose for clogs or damage is a good first step.