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This is how I do it, loosen the radiator petcock and drain down the cooling system. Remove both heater hoses from the engine side only. Fabricate a fitting that fits into the heater hose and also attaches to a garden hose. Attach the fitting to either one of the heater hoses and the garden hose. Direct the remaining heater hose down to the floor possibly into a large container. Gently turn on the water and gradually increase the water flow until it is on full. Notice the crud that comes out. Now reverse the flow through the heater core by swapping the garden hose to the other heater hose and repeat process until the water runs clear. Reattach the heater hose to the engine and refill the cooling system with fresh coolant.
What else can I help you with?
How do you install a heater core in a 1998 Chevy Camaro?
Remove the water from your 1998 Chevy Camaro cooling system. Remove the water supply hoses from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
Change heater core in 1998 Chevy Astro van?
Drain the water from your 1998 Chevy Astro cooling system. Remove the water supply hoses from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
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Does it hurt to swap inlet and outlet hoses on heater core in a 2000 Chevy blazer?
No it will not, it will just back flush the heater core and clean it out.
How to replace heater core on 98 lumina?
Remove the water supply hoses to your 1998 Chevy Lumina heater core. Remove the heater core retaining bolts. Reverse the procedure to install the new heater core.
How do you know when you heater core isn't working in a 1998 Chevy Malibu?
You will have only cold air coming thru your heater ducts if your core is defective.
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How do you replace heater core 1998 Chevy lumina?
To replace the heater core in a 1998 Chevy Lumina, first, disconnect the battery and drain the coolant from the radiator. Remove the dashboard and the center console to access the heater core. Disconnect the heater hoses from the core, unbolt it from the housing, and replace it with the new unit. Reassemble everything in reverse order, refill the coolant, and check for leaks.
What is the Heater core replacement procedure for a Chevy s-10 1993?
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