To replace the lower radiator hose on a 1986 Corvette, first, ensure the engine is cool and disconnect the negative battery cable. Then, use a hose clamp tool or screwdriver to loosen the clamps on both ends of the lower radiator hose and remove the old hose. Install the new hose by sliding it onto the radiator and water pump fittings, securing it with the clamps. Finally, refill the coolant system if necessary and check for leaks.
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