Major design changes marked the short wheelbase Cadillacs (series 61) for 1948.

• They featured General Motors first all-new postwar body with styling advances including tailfins inspired by the Lockheed P-38 fighter plane.
• There was also an attractive egg crate grille which was higher in the middle than on the sides.
• The front of the car was protected by a heavier and more massive bumper bar which curved around the fenders.
• The Cadillac crest was centered low in a 'V' above the radiator grille.
• Chrome headlamp rims were used.
• Cars in the 61 series lacked bright metal front fender shields and under-taillight trim.
• A new dashboard with "rainbow" style instrument cluster and leather grained panels extending to the carpets was seen only this year.