S10/T10 Blazer 4WD V6-262 4.3L (1989)
Heater Hose: Service and Repair
Engine Heater Hose Assembly
REPLACEMENT
The heater core can be damaged near the tube attachment seams if force is applied on them. If the heater hoses do not come off, cut the hoses forward of
the core tubes. Cut the hose on core tubes to remove.
IMPORTANT: Draw hoses tight to prevent sagging or rubbing against other components. Route hoses through all clamps as installed originally.
HEATER HOSES ROUTING
Heater hoses are routed from the thermostat housing or inlet manifold and water pump (radiator on some automatic transmission vehicles) to the core
inlet and outlet pipes. Hoses are attached at each end with screw-type clamps. Refer to accompanying figure.