Coyle, who also played for the club between 1993 and 1995, carried the coffin into Bolton Parish Parish Church on Wednesday, as did captain Kevin Davies.
Coyle said: "With our captain Kevin Davies and myself representing the club we were very privileged and honoured to be asked. It was a very emotional day.
"I felt it was a fitting send-off for not only a terrific footballer but such a wonderful man.
"The turnout was fantastic. He will be sadly missed."