2004 Chevrolet Tahoe "heater hose back flush" Questions

...hose to flush clean water through the heater core. Do this on both pipes going into the heater core. Keep flushing until the water runs clear. Re attache the the hoses, remove the radiator cap, start ...

...heater hose from engine to firewall is hot the other is not. The hose going to the rear heater is cold. What causes the hot water not to flow? Sounds like a blocked heater core. Could be different ...

engine till its at operating temperature then carefully hold the inlet and outlet hose breifly with heater fan on high if hoses are nearly the same temp then flow is good , if not then core is plugged

water pump and thermostat back insummer. never run hot before. lower radiator hose is ice cold even at 240 temp. Sounds like you may have blockage in the radiator. Give it a good cleaning and flushing

on the warm side but the truck doeasn't get hot at all and the temp has only dropped to about 29 degrees in these parts. could be an air lock in the heater rad, back flush with a hose to clear

...heater lines running from the engine compartment to the rear under the vechile. Those lines could be clogged or pinched shut. What you do is get two hose locking pliers. Go under your truck, they are ...

...core is plugged. Back flushing the heater may bring it back to life. Check those out first. Let me know if you have any questions and I'll do my best to answer them. Thank you for using

heater core with garden hose(Don't use a lot of pressure). Jell from antifreeze builds up in the heater core and blocks the coolant flow. If it is easier, remove the heater hoses from the engine, that

...heater core hoses let the other hose drain in a drain pan when you use home garden hose use low water pressure dont use garden hose to the max or you will rupture heater core. your best bet let ...

(both, unless you want to flush it into the radiator, just kidding) hook up (auto parts shop will have a coolant flush kit to hook up to the heater hoses) a garden hose and turn it on, flush both ways