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There is a drain plug underneath the radiator It will be on the bottom right if you are facing your vehicle. Then fill from your Radiator.

first you will want to locate the petcock (radiator drain) it should be near the bottom of the radiator on the side opposite the lower hose. simply turn the petcock (do not fully remove) the petcock is designed to let the fluid out without having to be completely removed. in order to expedite draining of fluid remove the radiator cap and there should also be small brass "vent" screw, its located near where the upper radiator hose connects to the engine and also within 2 inches of the thermostat. something else that i do to get some of the fluid from the heater core out is to squeeze the lower radiator hose near the engine block (reachable from the serpentine belt area of the engine.

~squeezing the hose produces a small pressure wave that forces fluid out and lets a little air in. making the draining process go a little faster.

the inlet hose should be the lower hose...

the radiator should have 4 other smaller hoses these are for engine oil and Transmission Fluid.

i always take mine to the dealer and let him/her to take care of it i trust the dealer to do a good job on my van

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โˆ™ 2015-07-16 18:57:49
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Q: How do you flush the coolant in a 1998 Pontiac Transport and where is the inlet hose?
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