In the 1990s, KKLS-FM was oldies formatted "Oldies 104.7" under ownership of Southern Minnesota Broadcasting.
In December 1997, KKLS flipped to CHR as "Hot 104.7", filling a format void that was left by 97.3 KPAT in 1992. Before the flip to CHR, the only station in the Sioux Falls area that carried the format was 99.7 KKCK from Marshall, Minnesota. While KKCK uses a full 100,000 watts with a large coverage area, the tower is over 50 miles away, which makes it harder to receive than the local stations on portable radios. Despite the more distant signal, KKCK had significant listenership in the Arbitron ratings (consistently in the top 5) throughout the mid 1990s when Sioux Falls did not have a local CHR. Areas south of Sioux Falls could receive 95.5 KGLI "KG95" from Sioux City, Iowa, which also ran a CHR format at the time.
In 2003, Southern Minnesota Broadcasting sold their Sioux Falls stations to Cumulus Media. In 2012, it was announced that Cumulus was selling their Sioux Falls stations to Townsquare Media.