Set sous vide machine to 57.5C/136F.
Salt and pepper the chuck roast to taste. Put the roast in a freezer bag with crushed garlic, and remove the air through a vacuum sealer or the displacement method. Drop chuck roast in the bath for 48 hours.
Remove bag from bath. Take chuck roast out of the bag, pat dry and season with salt and pepper to taste. Heat pan on high and add oil. Sear for 1 to 2 minutes on each side.
Slice and serve chuck roast with aus jus or your favorite sauce and enjoy!