Rear of the engine block.
5800 RPM
22 liters is equal to 22,000 milliliters.
Engine is running extremely rich.
The thermostat is on the water pump.(the left side in the front of the car) 2 screws to take out that's all
lr stands for long rifle(uses a bullet) I dont know where you got 22l from
GM doesn't have the fuel pump inertia switch. That's a Ford thing.
Start at the radiator and follow the upper rad hose to the engine. The hose connects to the thermostat housing. The thermostat is located in this housing.
Impossible to answer without more information
50-200 usd
Ther is no egr valve on the 2.2 turbo engines. With FI and turbo, there was no need. Some of the earlier carb engines did have egr.
10-1000 USD depending on specifics.