CKKS-FM (107.5 MHz, Sonic) is a radio station licensed to Chilliwack, British Columbia and serving Greater Vancouver and the Fraser Valley.

The station's main studios and offices are at 2440 Ash Street in the Fairview neighbourhood of Vancouver, where its rebroadcasting transmitter CKKS-FM-2 operates at 104.9 FM with an effective radiated power (ERP) of 31,000 watts and a height above average terrain (HAAT) of 672.2 metres (2,205 ft) from atop Mount Seymour.

While the CRTC did not permit the station to reduce its service to the Fraser Valley, approving the move over objections from several Vancouver radio stations, the move had the consequence of putting the Lower Mainland in its coverage area, and CKSR-FM opened a Vancouver office (without studios, as the CRTC did not allow permanent studios outside the Fraser Valley to be used).

[11] A program of chillout, downtempo and trip hop electronic music called Vancouver Chills, hosted by Trevor Shand, aired from 9 p.m. to 1 a.m. nightly.

In 2005, Shand left CKCL to move to Los Angeles to become the production manager at KROQ-FM (while continuing voiceover work for Rogers Broadcasting stations in Vancouver and Toronto).

Music Director Doreen Copeland took over as host of Vancouver Chills, which then began mixing more AC and smooth jazz in with the electronica tunes and expanded its airtime to 8 p.m. to 1 a.m. nightly.

Mornings on the revamped Clear FM were helmed by longtime Vancouver broadcaster Fred Latremouille and his wife Cathy, returning to local radio after six years of retirement in Hawaii on September 5.

On August 16, 2011, Rogers announced that CFUN-FM would launch a new format at 8:30 a.m. the following morning, and began redirecting listeners to sister adult hits station CKLG-FM.

[21] The application was denied in July 2020, with the CRTC ruling that Rogers "significantly understat[ed] the potential market impact of converting its rebroadcasting transmitter to an originating station".

[22] In 2021, Rogers received a renewal for CKKS-FM and its rebroadcasters, with the CRTC rebuffing a proposal to drop traffic reports for the Fraser Valley.

"[29] On June 30, 2022, at 6:00 a.m., the station officially flipped to modern rock as Sonic, with new morning host Angela Valiant introducing the format, then playing "Killing in the Name" one more time.