Hi, i will assist you in your problem
what is the temp running on the temp gauge. is the top radiator hose and heater hoses getting hot.
ok , if one is hot and the other is cold, this is a stopped up heater core, this is a very common thing. flushing out would give you heat probly for the remainder of the season but it will stop up again.
let the engine cool down and take the lines off of the engine and place a garden hose in the hose closest to the drivers side and turn on the water, this will back flush the heater core. reassemble and make sure to top off the antifreeze.
or remove the dash assy to gain access to the hvac box and remove and replace the heater core.
also i recommend to flush the cooling system and refill with 50/50 antifreeze and water mix.
Wow...that is it!!! Thanks!!! I am a bit pissed at the shop I go to then. I asked them to take the first step in fixing this...which we agreed the thermostat was step 1 $100.
If that did not take care of it then step 2 heater core at $1,000. There was no mention of step 1.5...flush the system. This just saved me big bucks...next step was to dump this POS and buy a new truck $30,000...was not looking forward to that!!!
I was looking online at Auto Zone...I see part number 394195 new heater core for $47.99...is that the part I need?
Other problems I have with this truck which I have received help is the Wheel Bearings in the front, the dumb oil lines that are seeping, and a low voltage on the alternator.
sure, purchase coolant flush at a local parts store, and 2 gallons of antifreeze. drain the radiator fluid into a container, the drain is located at the bottom of the rad. on the drivers side.
refill the system with the cleaner and water, run the engine till hot and make sure the rad is full of water, follow directions on the flush container as to how long to run engine.
then after this process drain again.
refill with water only and repeat the same process as above except don't add any more cleaner, do this until the system is clear.
then drain once more and then refill with 1 gallon of antifreeze and then top off with 50/50 antifreeze.
most flush cleaners will have a step by step directions on the container.
yes add the 50/50 mix to the res. and also be careful because the engine will be hot after running, be sure to let cool to a safe working temp. before opening the cap or drain plug.