Hi my 1997 6 speed lt1 Camaro has been overheating lately. The coolant is low when it happens and it is boiling out of the overflow. I have looked for any other leak but have been unable to find one. So I was wondering if it was a problem with the thermostat, a clog or something like that. Even when I add coolant to get it approximately full it does not take long for it to overheat again driving or idling in the driveway. Would appreciate any help you guys could give. Thanks.

 

You are telling us that there are no visible leaks. in which case it could be that there is air in the cooling system and it needs to be bled out, or that the fans are not coming on when they should, bad radiator cap, clogged radiator, or in the worst case a blown head gasket. Unless the t'stat was previously replaced with an old style one that can fail either in the open or closed position, the stock unit is built so that it can only fail in the open position, so it should not be the cause of the overheating

 

look at number 12 and 15 here 4th Gen LT1 F-Body Tech Aids
also at number 1 here https://camaroforums.com/forum/93-02...62/#post557634