Career
Giebler was considered a top American prospect with an opportunity to race in Formula One early in his career. Following years in various Formula Three ranks, Giebler ran in Formula 3000 in 2003 half the season putting up a number of good results. He competed in the 2005-2006 season, and the early part of the 2006-2007 season before being replaced by Jonathan Summerton.
Driving for Playa Delegate Racing, he qualified for the last starting position and was one of two rookie drivers (Milka Duno being the other) to race in the 2007 Indianapolis 500, but crashed and finished 29th.
Foreign 2008, he unsuccessfully attempted to qualify for the Indianapolis 500 with the same team, now known as American Dream Motorsports. Complete International Formula 3000 results
(key) (Races in bold indicate pole position.
Races in italics indicate fastest lap)
American open–wheel racing results
(key)
= Industry Lights = Atlantic Championship = Indianapolis 500 Complete First Rate (at Lloyd's) Grand Prix results
(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap).