After his immediate success at Tigres, Kléber' performance dropped off and he was mostly relegated to the bench for the Clausura 2004 season, scoring only one goal. Following the Clausura 2004 season, he was transferred to Veracruz, where he enjoyed limited success, scoring twice. Thanks to a recommendation by his ex-teammate Cuauhtémoc Blanco, Kléber was signed by Club América following his lone season at Veracruz. There, he regained his goalscoring prowess, scoring 14 goals in his first season at the club, helping them to a championship in the Clausura 2005 season. Kléber did not actually play in the final, after being suspended for three games due to kicking Federico Lussenhoff of Cruz Azul in the groin in one of the semifinal matches. The following season, Kléber won his second goalscoring title, sharing it with three other players (Vicente Matías Vuoso, Walter Gaitán and Sebastián Abreu).