 He was raised to the rank of Papal Chamberlain in October 1934, and a Domestic Prelate in September 1935.On June 20, 1936, Garriga was appointed Coadjutor Bishop of Corpus Christi and Titular Bishop of "Syene" by Pope Pius XI.He received his episcopal consecration on the following September 21 from Archbishop Arthur Jerome Drossaerts, with Bishops Emmanuel Boleslaus Ledvina and Aloisius Joseph Muench serving as co-consecrators.