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If it is a gas engine, then no. If its not gas then yes.
NO it don't have one.
Pasanger side behind head lights
maybe the heater core.
usually right side rear of engine
That is called a quick disconnect fitting and it requires a SPECIAL tool to get it loose.
Driver side of the engine low back.
if you see no plug than it has neither one you have to pop out the frost plug and put in a block heater
It may not be equipped with one. If it is you would easily see the cord.
I had one installed on the 99 model at a shop. this is the same run line, 99-03.
It has none, unless you install one.
No factory installed unit. OEM stopped block heaters after consumers reported engine compartment fires using block heaters.