I've got a better question, why is this question in the Chevy venture forum ?
Get a Haynes repair manual for your 2000 Chevrolet S10. Covers most minor service questions like this. Any Autopart store. $17 or $20.
Two.
5w30
It is on the cylinder head near the thermostat housing.
No.
If you follow the upper radiator hose to the engine, the hose is attached to the thermostst housing. The thermostat is located under the thermostat housing.
Remove 2 mounting bolts and replace
extended pickup
Passenger side valve cover
follow top radiator to end of hose, the thermostat is in the housing at end...
You did not mention the engine size. Regardless, it is in the thermostat housing on the intake manifold.
The thermostat is located on the engine of a 6.0 vortex 2000 Chevrolet Silverado 2500. The thermostat can be found by following the upper radiator hose directly to the thermostat.