You can use tranward option to that particular column,
as
The TRANWRD function differs from TRANSLATE in that it scans for words (or patterns of characters) and replaces those words with a second word (or pattern of characters).
As TRANWRD() searches for words (whole strings) separated by some delimiter this would be the wrong function for simply replacing a character with another character.
Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.