There is 2 of them in the back of the engine. You will have to pull the engine are remove the transmission and fly-wheel to get to them. It is what ever is the easiest for you.
It is located behind the fan and mounted to the engine block with 4 bolts.
If you slide in behind the drivers side front wheel and look up at the engine you will see it.
It is behind the timing cover on the front of the engine. You will have to remove the timing cover to get to it.
It is mounted in the passenger side of the engine block right behind the starter. You will have to remove the starter to get to it.
On the Vortex 5.3 it is located on drivers side, rear of engine, on top of engine, just behind intake manifold.
I belive you may be asking where the crankshaft positoning sensor is, if so is is located behind the harmonic balancer. NEW ANSWER: That is true if it is a V6 engine, But if it is A V8 Then it is behind the starter.
Just follow the BOTTOM radiator hose to were it clamps onto a housing on the front of the engine and it will be behind the housing that the hose is clamped to.
It is mounted in the side of the engine block behind the starter. You must remove the starter to even see it.
The thermostat is located on the top of the radiator in the engine. It is on the upper hose intake of the engine.
Do it yourself engine transmission flush and filter change on 2005 Chevy silverado 5.3?"
The evaporative emissions (EVAP) canister purge solenoid on a 2003 Chevrolet Silverado 1500 with a 4.8 liter engine is located behind the throttle body, near the front of the engine. I have a picture of it that I could send to your email if you want.
The Chevrolet Silverado 1500 or is located in the engine compartment. The horn will be next to the radiator, on the right hand side.