CablePulse 24

The channel was licensed by the Canadian Radio-television and Telecommunications Commission (CRTC) as Pulse 24 in 1996 (as a connection to the former name of CITY-TV's newscasts, CityPulse) and was launched as CablePulse 24 (CP24) on March 30, 1998, under the ownership of CHUM Limited and minority partner Sun Media, owner of the Toronto Sun daily newspaper. Sun writers and commentators were featured regularly on the channel.

On December 1, 2004 CHUM Limited acquired the remaining interest in CP24 (giving it 100% of its shares), when the Sun's owners sold their 29.9% share in CP24 after acquiring its independent broadcast station Toronto 1 (now Sun TV), the same day when CHUM Limited took control of Craig Media and its assets.

On June 22, 2007, CTVglobemedia took control of CP24 as a result of a buyout of CHUM Limited.

In December 2008, CP24 replaced its simulcast of Citytv Toronto's CityNews at Six with a new simulcast of CTV Toronto's CTV News at Six and abruptly removed almost all of CP24's simulcast of Citytv news programming except for Breakfast Television, this change was likely as a response to the condition of the CRTC approval to an application by Rogers Media owners of Citytv to launch a 24-hour news channel for the GTA called "CityNews Toronto"