I've used this forum with help in regards to my 2010 Enclave. I searched the sight for an issue that came up during a service call yesterday but did not find a specific answer. My wife was told that the passenger side high beam was out and that the assembly needed to be replaced ($1,125 + $144 labor.) I haven't been able to discuss this with the service department, but I have a hard time imagining that a bulb replacement wouldn't be the first step. Is there something special about these headlights? Thanks for your help. We haven't had any issues with the service department (of course the extended warranty just ended.)