Guignedoux's involvement with football did not end after retiring from the sport itself. Firstly, in 1980, he became a
physiotherapist for his former club Paris FC. He then spent a short amount of time as a
P.E. teacher before becoming the coach of the Paris Saint-Germain C team in 1981. After eleven years at the position of PSG's C team coach, Guignedoux became the coach of PSG's under-15 squad. He stayed there for seven years before returning to his former role of C team coach in 1999. In July 2001, Guignedoux once again left the role of PSG C team coach, this time to be part of PSG's
youth system. He returned to the PSG C team in February 2002, only to go back to his position in the youth academy five months later. In October 2003, Guignedoux became the assistant manager of
Strasbourg, under the direction of
Antoine Kombouaré. Twelve months later, he stepped down from the position to become a
scout for the club's youth academy. In June 2005, Guignedoux joined
Valenciennes as the assistant manager of the club, once again in a collaboration with Kombouaré. Valenciennes won the
Ligue 2 and achieved promotion in Guignedoux's first season as assistant coach. From 2009 to June 2012, Guignedoux was the technical director in the amateur departments of Paris Saint-Germain. On 16 December 2012, Guignedoux honored
Ezequiel Lavezzi with a trophy for being the scorer of the 3,000th goal in PSG history; Guignedoux was the first ever scorer for the club, back in 1970. == Health issues and death ==