Where a defendant confesses and pleads guilty after being properly admonished, they waive any claim that the confession on which their conviction is based was coerced.The 1st District Appellate Court affirmed the decision of Cook County Associate Judge Timothy Joseph Joyce.Jerome Johnson, along with Eric Clark and George Anderson, got into a fight on June 9, 1991, and afterward planned to get revenge on the men they were fighting. They contacted three friends, obtained guns including a .22 caliber revolver belonging to …