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How do you change the heater core in a 1992 Chevy s10 blaizer?
Wiki User
∙ 17y ago
Drain coolant and disconnect hoses at firewall.Loosen clamp at firewall.Remove screws around glovebox and remove door.Remove panel on right side against floor.Loosen up dash support right side.Remove cover at core.Cock core out of box with twisting motion. Install new core carefully.May need some one to help guide through firewall.Make sure you do not break solder between tubes at firewall.(I did the first one and it leaked in 5 months)Install new hoses and hose grease and install clamp.If clamp pulls on core then leave it off..Fill with coolant.
Wiki User
∙ 17y ago
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