The 36-year-old calls it quits with 86 international appearances for the West Indies, with more than half of those coming in the Test arena where he made a name for himself as a fearsome fast bowler.
Meanwhile, Gabriel stated that he was never doubtful about his fitness.
England had little going their way in the third session with their three dropped chances and one run out miss coming to haunt them.
Shannon Gabriel was among the reserves and has now been drafted into the 15-member squad after proving his fitness following ankle surgery.
After winning the toss, West Indies captain Jason Holder chose to field first at the Sir Vivian Richards Stadium in Antigua on Thursday.
Gabriel said he now feels deeply sorry about his comments.
Gabriel took 5 wickets as Pakistan were all out for 81 in their 2nd innings.
Pakistan reached 201 for four in reply to the West Indies first innings total of 286.
