The 2004 GMC radiator drain is located on the bottom of the radiator. The radiator drain plug can be removed with a half inch ratchet.
Bottom of the radiator.
Sorry but no
bottom driver side of radiator
You will find that it is located on the bottom of the radiator. If you do not find a drain Petcock on the bottom of the radiator you must remove the lower radiator hose in order to drain the radiator.
in the radiator reservoir
Open the petcock at the bottom of the radiator and drain into a pan. If there is not a petcock, then remove one end of the 94 GMC Sierras bottom radiator hose to drain the system. The coolant is toxic to animals so dispose of properly.
On a 2001 GMC Savana 5.7 V8. There is no drain plug. You actually have to remove the big hose that joins the engine to the radiator. This will drain out all the fluids.
Bottom corner of the radiator, on the passenger side.
The only way to drain all the coolant is to unhook the bottom radiator hose. The radiator does NOT have a drain vale.
it could be the thermostat or it could have a leak in theradiator's hose or radiator
The 2004 GMC Sierra-2500HD has 16 valves.