CB?
That critter has been dead since the 1970s and should have been buried a long time ago..
Last vehicle I had one in was a 1997 and in 2003 pulled it out when I bought a new vehicle..
Never bothered putting back in because I only turned it on only a couple of times in the 97 and each time greeted with bleed over from too many folks with linears and potty mouths..
If you have one, do yourself a favor, toss in the trash and don;t look back.
If you don't have one, don't waste your money, you won't get much of any info since most truckers use business band radios and cellphones now days..