I think it is on the firewall above the engine. There may be more than one relay there but I'm not sure which one is the fuel pump relay.
At the bottom of the engine block.
Should be in a removable housing at the engine end of the upper radiator hose
The engine
It is in the housing on the engine that the top radiator hose goes to.
wer is the starter in impala2000 Under the rear center of the engine
The 1994 Chevrolet Astro V-6 engine temperature sending unit can be located on the front of the engine. The temperature sending unit will be next to the thermostat housing.
Probably doesn't have one. The filter (by-pass) was an option.
Back of the engine block, underneath the coilpack.
It's on the rear left hand side of the engine near distributor.
Standing in front,on top of engine in front,above fuel rail.
Back of the engine, center, under the exhaust manifold. According to autozone.com
The Chevrolet Corsica 3.1 liter engine crank sensor can be found on the back of the engine. You will need to remove the rear engine cover in order to access the crank sensor.