By the 1990s, the station had begun to lose its dominance due to competing stations and other factors, resulting in a decision by Telemedia to merge its radio network with competing chain Radiomutuel as Telemutuel, and CKAC becoming a joint venture of the two owners. Telemutuel's CJMS was shut down, and much of its programming and personalities were moved to CKAC. In 2001, Radiomutuel's successor, Astral Media, announced its intent to acquire the remainder of the Telemutuel network and CKAC. However, the acquisition was blocked by the Competition Bureau, resulting in the stations instead being sold in 2004 to Corus Entertainment as part of a larger exchange of assets between the two companies. CKAC became the flagship and provider of talk radio programming to the Corus Québec network, but its newsroom was later shut down in favor of that of its new sister station CINF (later CHMP-FM). In 2007, the station flipped to an all-sports format.