Bühlmann was educated as merchant, trained theatre with Adolf Manz between 1947 and 1950, received elocution by Ellen Widmann and role studies by Gustav Knuth.

[2][3] From 1968 to 1971 Bühlmann was a member of the Theater am Neumarkt ensemble,[4] since 1971 on Bernhard-Theater Zürich where he was nominated by the leading actor Jörg Schneider to a role in the farce "Der keusche Lebemann".

[2][5][6] Bühlmann and Schneider succeeded with the Polizischt Wäckerli radio play in 1966, as well as with the stage production and the television series.

He guested on Sommertheater Winterthur and Städtebundtheater Biel-Solothurn including in Molière's "The Miser" in 1977 and in 1984 in Flatows "Das Geld liegt auf der Bank".

[2] Beside the stage and television and film, again with Jörg Schneider and Ines Torelli, Bühlmann became also very popular in the German speaking area by his Kasperle, Pumuckl (Bühlmann gave his voice to Meister Eder) and fairytale-radio plays records.