Here’s a detailed review and analysis of the question:

The episode picks up immediately after. The surgical team, led by Dr. Webber and Dr. Hunt, tries to save him, but his injuries are catastrophic. They discover massive internal bleeding and organ damage from the bus accident.

His death is confirmed in the , episode 1 ("Good Mourning"), when his friends gather to take him off life support.

This question is one of the most frequently asked by new or returning viewers of Grey’s Anatomy , largely because George O’Malley’s death is both shocking and, in a unique way for the show, initially ambiguous.

" . While the accident that leads to his death occurs in the Season 5 finale, he is not pronounced dead until the start of the following season. The Circumstances of His Death