Its located under the dash, just behind the glove compartment. From what I've read, you have to pretty much remove the entire dash to get to it.
The 4.3 litre V6 engine in a 2000 Chevrolet Blazer has a timing CHAIN
It is under the hood in the power distribution center.
It is on the throttle plate right across from the throttle cable.
You did not mention the engine size. Regardless, it is in the thermostat housing on the intake manifold.
The 2000 Blazer with the 4.3 engine has one coil.
The heater control valve (temp blend door) is located behind the dash assembly. The dash assembly has to come out to gain access to it.
5w30
Yes. They both use the 4L60E transmission.
GOOGLE!
Approximately 19 Gallons according to Lotpro : http://www.lotpro.com/cars/2000/chevrolet/blazer/techspecs
They did'NT make the Trailblazer in 2000 might you be looking for information for a 2000 Blazer.
It goes to the water pump.