2000 Chevrolet Silverado 1500 "water heater control box" Questions

heater control vale for the water flow is on the passenger side top of the engine near the firewall. It will have a domed top with a vacuum line to it and it is placed into the heater core supply hose

...heater will not work because no water is getting to the core. In this case you will need to isolate the vacum leak back to the source of the problem. If there is a cable connections make sure the ...

...water force the air out of the heater core; this is commonly referred to as "burping" the system. It worked perfectly a few years ago, then this month when the temp dropped, I went to use the heater ...

...heater not blow out at floorboard position it will work at all other? No other problems like water on floorboard. With the engine cold look under the hood for a small vacuum hose that feeds the duct ...

...water to or away from the heater core, no such animal exists anymore. Hot water is always routed thru the heater core whether or not you are using the heater. The blend box under the dashboard has ...

...heater core - no water flow thru core, thus no heat. 3. Broken control head - loss of cable or vacuum actuation of blend door. 4. Broken heater box/vacuum tank - no actuation of blend door. Of the ...

...the A/C evaporator box . This is all dependent on where you are . Is it hot an your using A/C .? Does it have a smell of antifreeze or just water ? The plastic box you show is the heater , A/C box

...water through the heater radiator. Some times there is also a flap in the air ducts that is operated by the heater lever tha varies the amount of air that is heated. The tap may be in the engine bay ...

...the doors in the heater/ac box are operated by a elect switch same goes for the water control valve if water is not closing it let hot water in the heater box which will most over the cold air from ...

...water pump. the heater still blows cold air . you may have a problem with heater box. your air/mix door may have an issue. feel the knobs on the control unit. if the cold/heat know feels kinda funny ...