How to fix the heater? - 1995 Chevrolet Camaro

This should fix the heater core problem as it sounds like you have airlocks. You will have to find the leak and fix it though.

https://www.fixya.com/cars/r29872074-vehicle_cooling_system_no_heat

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Bad connection at heater box under to hood

It sounds like you probably have a leak in your heater core. Replacing a heater core can be a difficult job. If you decide want to try it I suggest you get a shop manual to help you out. I can give you a relatively easy temporary fix that will stop the leak until you have more time to fix it or you can take it into a shop to have it done. The down side is this fix will temporally disable your heater. Wait for the engine to cool. Open the engine compartment and look all the way in the back between the engine and the firewall. Find the 2 heater hoses that pass through the firewall. They should be about 1 inch in diameter. Undo the hose clamps and disconnect them from the firewall. Get a short piece of metal tubing about the thickness of the inner diameter of the hoses. Use this metal tubing to connect the heater hoses together and clamp them using the two hose clamps. Now the antifreeze that would normally circulate through your heater core will instead circulate through this loop and not enter the passenger compartment. If you can't find a short piece of metal tubing to do this fix you can completely remove one of the heater hoses. Then take the other heater hose and connect it to location near the engine where you disconnected the first hose. Save the first hose so you can hook it up later when you do the more permanent fix. Make sure to position all hoses such that they aren't resting on any hot surfaces. I hope this advice helps you out.

If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing

• The heater housing is usually under the dash and must be removed to gain access to the heater core.
• Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.

The heater housing is disassembled to get to the heater core. Heater Core

• Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
• Remove the heater coolant hoses.
• Remove the cable and/or vacuum control lines (if equipped).
• Remove the heater core securing brackets and/or clamps.
• Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
• To reinstall the heater core, reverse the removal steps.

When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

check the wiring to the reostat (the resistor that controls the fan speed) also check the reostat has not burnt out. (the reostat should be near the heater motor housing)

please let me know if this helps
cheers
big mike :)

You will have to remove console, and all the venting and cover to heater core. Then go underneath the vehicle and disconnect both coolant hoses. Then remove heater core. You can go to autozone.com and register for full free online repair manual for your durango with everything you could need.

no heat make sure coolant is up no are pockets when car running both hoses hot, check thermostat, if bigg temp diff from inlet to out let hose have pluged core needs a flush, poss replace heater core

Take my word for it, you don't want to fix it. Take it to your local radiator shop and have someone put a heater core in it for you. You will be way better off. I've done these before and it takes about 6- 8 hrs. The whole dash has to come out. The steering column has to be dropped. If I had one of those cars that needed a heater core, I would take it somewhere and have it done. Phil

need to remove dash & replce heater core

Hey mad40bx that will be your heater core,,just pick up a new one and grab a haynes or chilton manual for your truck if you are not familiar with the procedure its not that bad, if you dont need it fixed immediately take the 2 hoses off from the firewall (One is supply and one return) and couple them together this will bypass the heater core until you are ready to fix it, good luck