McKagan tweeted a picture of a handwritten set list featuring Guns N’ Roses songs.
The accompanying caption read: “Argentina, Paraguay, Bolivia, Brazil! See y’all in the next few weeks, Si? GNR.”
The bass player officially left Guns N’ Roses in 1997, and in recent years bass duties have been undertaken by Tommy Stinson. Stinson will be unable to play the South American dates, however, as he will be joining his bandmates in The Replacements to perform a run of reunion shows, including the Coachella festival in California.
McKagan last played onstage with Guns N’ Roses at London’s O2 Arena in 2010, while his own band, Loaded, have opened shows for Axl Rose during 2011.