Looks like, from what other have written, '95 -'06 is 0.06 and '06 is 0.05. See web page http://performance.yoparts.com/Store/Product/ItmGroupDetail.aspx?GroupId=53166&Make=Chevrolet
the spark plug gap for 2004 monte carlo ss 3.8eng is .060
It is important to gap the spark plugs at the right size. The spark plug gap for a 1981 305 Monte Carlo is .045 inches.
The recommended spark plug gap for a 2000 Chevy Monte Carlo 3.4 V6 is .060"
ACDelco #41-601 conventional spark plug gap .060"
.45
The spark plug gap for a 1995 Monte Carlo z34 is.45 inches. New spark plugs come preset, however, and should not need adjustments prior to installation.
.060
.30 Just get a spark plug gapper to see what your gap is and adjust accordingly
60.
ACDelco conventional spark plug 41-601, .060
The gap.spec is..060 hope this.helps.
Go to Auto-zone and get a Haynes repair manual for $20.