How many idler pulley does a 1994 4.9 cadillac develle has?

A 1994 Cadillac DeVille with the 4.9L engine (a Northstar V8) doesn't have idler pulleys in the traditional sense of a separate pulley solely for belt routing. The serpentine belt system uses tensioner pulleys that also serve to keep the belt taut. There isn't a distinct count of "idler" pulleys separate from the tensioner.