The station has an ad-free news/talk format and is part of the Ici Radio-Canada Première network, which operates across Canada.

The station originated in 1933 as CRCS, owned and operated by the CRBC and based in Chicoutimi (which became part of Saguenay in 2002).

Because of deficiencies with the main FM signal which did not exist when the station was on AM, in the 2000s CBJ-FM operated a relay, CBJ-FM-6, to serve nearby La Baie, now part of Saguenay.

That relay was one of the few co-channel relays used in Canada, meaning that it had also operated on 93.7 MHz; this solution was chosen to permit people to listen to the station in their cars continuously between Chicoutimi and La Baie without having to switch to a new frequency, de facto extending the main signal of CBJ-FM.

[9] CBJ-2 operating at 1140 kHz in Chapais, Quebec located about 40 kilometers from Chibougamau is the last remaining AM transmitter to rebroadcast CBJ-FM.