Hey man seems like we are having the same concerns again.
I just posted mine under the thread by 'fosterone' about his 2007 running hot.
I think you're asking the same question. But not sure by what you mean 'scan gage 2' and I don't have the intercooler.
I am concerned b/c mine got up to 216* today and the fan didn't come on. Just trying to see if that's normal. Seems pretty hot to me. And when does the over-heat light come on? Searched for an answer but no luck.
2006 Chevrolet Cobalt LS, (2.2L), 5 speed
1971 Chevy C20 Longhorn (6.6L, 402c.i.BBC)
1973 Chevy K20, 4x4, std. cab, longbed (350c.i.);
1979 Chevy Corvette (350c.i.);
2001 Chevy Xtreme S-10, ex-cab, 5spd. (4.3L);
2001 Chevy Silverado 2500HD, 4x4, ex-cab, (6.0L);
2002 Chevy Silverado 1500, ex-cab, 4-6drop (4.8L);
2003 Chevy Silverado 1500, 4x4, std. cab, 5spd (4.8L);
2004 Chevy Colorado Z71, 4x4, crew cab, (3.5L);
2006 HUMMER H3, 4x4, 5spd., (3.5L).