Green’s Dictionary of Slang

a sound, a noise, esp. of complaint; usu. in phr. not a cheep out of, not a sound from.

1897		Boy’s Own Paper 20 Nov. 123: Not a cheep!
1920		T. Thursday ‘Mr. Mister’ in All-Story Weekly 22 May 🌐 According to Purcell’s own cheep, some bean had told him that he was a ‘type.’.
1935		G.T. Fleming-Roberts ‘Snatch Bait’ in Ten Detective Aces Oct. 🌐 We haven’t had a cheep out of Sammy.