Oct 07, 2013 Hello Fred. Run the engine up to normal operating temperature. Reconnect the negative battery cable. Install new core in the plenum assembly carefully to avoid damage, reassemble the plenum accordingly. Refill the engine coolant system.
The core can be bypassed so that the truck remains functional during the removal, but if you're not a patient person or don't have the time to dedicate to the project it would be far easier to just pay someone else to replace it. This will be my first time replacing all the hoses on the 04 silverado. If there was more room to work I would be done already, but my hands are too big to move freely in such a small space. Some covers were sealed shut with some type of adhesive and the cover may require a considerable amount of prying to free. I'll never buy another Cheverolet because of the difficulty in replacing their heater core.
Other things to remember are to removed the hoses from the heater core before you try and pull the barb fittings through the firewall, and the unit has coolant in it so be prepared to soak that up. . You can replace this Y with one that does not have bonded hoses, or you can reuse it. Remove defroster duct to distributor case attaching distributor to heater case. Position the assembly onto the dash and tighten the retaining screws.
If this is the case, many vehicles have a bleeder valve to allow trapped air to escape from the system which is usually located near or on the thermostat housing. Thanks, I got the hoses off but pulling the heater unit out of the dash is holding me up now. If you're not sure how to remove the refrigerant or don't have the proper equipment, do not attempt to improvise; have a more experienced friend help out. You will also need the J 43181 tool to disconnect the surge tank outlet hose from the heater core. Reverse flush a heater core using low flow from your garden hose Normal house water pressure is 40-60-psi. Take off the , if one is equipped. You could not pay me enough if I were a mechanic to ever do it again.
Drain the radiator and disconnect the heater inlet and outlet hoses at the dash. The biggest problem is the location of the heater core, only a few inches of clearance between the firewall, serpentine belt drive accessories, and the engine. It needs to be clean and pretty round. You might need to splice in some more hose sections to get the chopped heater hoses to reach the core nipples again. Here's the same thing at Harbor Freight. The connection I initially had the question about is on the left.
Am I correct that I should not have to remove anything from the ac condenser box just to the right of it? However, are there upgraded versions of these connectors? Loosen the bolt until you can remove the thermostat housing, it should be slotted to clear the bolt. Then gently twist and pull it off the heater tube. You can save yourself a lot of grief by choosing this route from the begining. I'm planning on replacing the coolant hoses on my 01' Silverado. Refill heater core with coolant Disconnect the flushing adapter and garden hose.
Thank you for using FixYa. Step 12 - Next, remove and vacuum lines and control cables from the plenum. I suppose some sort of special tool is required or perhaps knowing the trick. This eliminated any need to pull anything on the driverside dash and turns this into an hour job once the cut is made. The fittings are brittle and they'll break if you stare at 'em too hard.
Remove top thermostat housing bolt. The pry the crimp sleeve off. I was able to get the heater box out with the core finally. Remove the dash bolts it does not need to come all the way out. How long to reverse flush a heater core Continue the reverse flow through the heater core until the outlet water flows clear. Carefully remove the heater core and discard it. There were 2 bolts that hold the steering wheel to th … e dash.
It seems that there is a metal end of the heater protruding thru the firewall enough so that the hose can be sliped over it and clamped in place. Allow the engine to reach operating temperature and check for leaks. Grasped about as close to the heated section as you can. This is also an excellent time to do that tune up you've been putting off as the engine will be easily accessible for plugs, wires etc. Thanks for sending us your question today. Remove the heater core hose clamps The rubber hoses are held in place by worm drive clamps, spring clamps or crimped clamps.
Get the hose end too hot to touch and gently pull and twist on the hose. As far as heater core R-N-R'S not a very difficult job. As alluded to above, grime, grit and crude make the couplings difficult to separate. Do the bottom first for obvious reasons. Any tips or ideas how I can get the stuck hoses off?? Helpful Information Use caution when installing the heater core, these units are made of thin metal and plastic and are easily broken.