Seems you couldnt get a simple question answered so here goes bro.
1. you will need to drain coolant, looking dead at the front goto the left side of the radiator, crawl under the truck and look on the engine side of the radiator and you will find a pet cock.
open drain and remove raditator cap, drain out about 1 gallon and a half, close valve.
remove upper radiator hose and clamp with large set of pliers.
The thermistate housing is just below the upper hose where it atatches to the engine, remove all bolts, and yes they are a pain.
Pay attention to how the thermostate is posistioned and replace thermostate.
replace housing , hose, and be sure pet cock is tightened on bottom of radiator.
pour in new coolant or filtered old.
now you will notice a small bleeder on top of the thermostate housing, slightly open it till coolant weeps from it,
Crank truck and let it run , I found a socket works best , for openinn and closing the bleeder valve. Slowly open it till no more bubbles come out ,, then tighten it up.
what you are doing is getting all the air out of the coolant system, top off coolant in radiator and overflo jug.
One note also , you can remove the radiator cap and use a suction device such as ons used for kerosene cans to remove coolant, because all you need is enough to remove the upper hose.
some coolant will come out when youremove the housing , but not alot.
hope this helps bro.
1. you will need to drain coolant, looking dead at the front goto the left side of the radiator, crawl under the truck and look on the engine side of the radiator and you will find a pet cock.
open drain and remove raditator cap, drain out about 1 gallon and a half, close valve.
remove upper radiator hose and clamp with large set of pliers.
The thermistate housing is just below the upper hose where it atatches to the engine, remove all bolts, and yes they are a pain.
Pay attention to how the thermostate is posistioned and replace thermostate.
replace housing , hose, and be sure pet cock is tightened on bottom of radiator.
pour in new coolant or filtered old.
now you will notice a small bleeder on top of the thermostate housing, slightly open it till coolant weeps from it,
Crank truck and let it run , I found a socket works best , for openinn and closing the bleeder valve. Slowly open it till no more bubbles come out ,, then tighten it up.
what you are doing is getting all the air out of the coolant system, top off coolant in radiator and overflo jug.
One note also , you can remove the radiator cap and use a suction device such as ons used for kerosene cans to remove coolant, because all you need is enough to remove the upper hose.
some coolant will come out when youremove the housing , but not alot.
hope this helps bro.