Question about 2001 Chevrolet S-10
Try removing the Heater hoses from heater tubes(be careful not to break heater tubes off) then back flush heater core with garden hose(Don't use a lot of pressure). Jell from antifreeze builds up in the heater core and blocks the coolant flow. If it is easier, remove the heater hoses from the engine, that is safer. Back flush the heater from the hoses. To Back Flush (The hose coming from the water pump is the inlet)(Hose going to Manifold is outlet) Back flush outlet hose! To much water pressure may cause damage to heater core!!!! Do Not ues AIR!!!!
Posted on Sep 28, 2010
Take out ac fuse an take hoses off heater core on fire wall take water hose an flush
out heatercore. then put hoses back on
check afreeze start engine turn heater on.
Posted on Feb 11, 2011
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Posted on Jan 02, 2017
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