In 1995 Guerrero returned with Pagan Racing in their No. 21 Upper Deck Reynard 94i-Ilmor-Mercedes-Benz IC108B. Guerrero first raced at the Slick 50 200 at Phoenix International Raceway, starting 25th and finishing 16th. The team then competed in the Indianapolis 500, where Guerrero qualified in a respectable 13th place and finished in 12th place. Guerrero finished the season 33rd in the championship with 1 point.