Need to check the 4 corners on the intake manifold. It is common for the intake to leak engine coolant.
R134a
full coolant system is about 12liters dry.
Dex-cool
It could be the coolant overflow tank that is leaking.
r-134A
11.7 quarts
It uses Dexcool.
Aprox 12 qts.
The heater core has failed and is leaking engine coolant.
If your 2001 Chevy Blazer is leaking antifreeze after the engine is stopped but not overheating, it may indicate a coolant leak from a hose, radiator, or water pump. Check for visible signs of leaks under the vehicle or around the engine bay. Another possibility could be a failing gasket, such as a intake manifold or head gasket, which can cause coolant to leak when the engine cools down. It's advisable to have the vehicle inspected promptly to avoid potential engine damage.
Aprox 12 qts, it varies if you have ac or not.
Originally it would have had DexCool.