1999 Chevrolet Suburban "rear heater core replacment" Questions

...Heater is not working in front or rear. Have replaced t-stat, and temp doors are working, but I seem to have no flow to either heater core. I have the same model suburban. I replaced the heater core. ...

...REAR HEATER AND SEE IF ONE IS HOT AND THE OTHER ONE IS COLD. IF THEY ARE AS I MENTIONED THEN YOUR PROBLEM COULD BE THE REAR HEATER CONTROL VALVE (if the valve is located after where you checked the ...

...rear. Just blows cold air. Could this be an accuator problems if its all three zones? Or should I be looking at the thermostate/ heater core? Also does this model vehicle have a heater core for both ...

rear? Any ideas Does the engine take for ever to warm up on the guage? If so it could a stuck thermostat , replace thermostat first, then if it does not work chech the rest of the heating system, does

...rear A/C - HEATER unit is located under the right rear trim penel. Open the rear hatch and remove inside trim panel on your right side. There you will find an evaporator core and a heater core and a ...

...rear control and decides the fan speed.  That processor could be faulty, or the blower motor, or a 30amp fuse in  the engine compartment.In the front system you have a controller and blend ...

...rear vents are pretty well. Many times that this happens it is the climate control panel. it is malfunctioning. However that is not always the case. Many instances the vacuum hose for the blend door ...

...rear blows 48 degrees. ambient is 91 degrees. this is with max-recirc-full tilt.the valve for the heater core does not change position no matter where i put the temp. control on the dash (max cool or ...

...heater core supply pipe. No other parts changed, except for distributor cap. Sounds like not running on all 8 cylinders and spits, sputters and pops a lot when trying to accelerate. VERY poor ...

rear hat almost never worked either. I just cant seem to get it warm and keep it there. seems way over cooled You may have been given the wrong thermostat. Either way, you can try a hotter thermostat.