Question about 1988 GMC S-15
Coolant leaking into passenger compartment from floor heater vents. Causes the windows to fog up even when defroster is not running. Suspect heater coil leak in heater box. How can I fix this myself?
Hey mad40bx that will be your heater core,,just pick up a new one and grab a haynes or chilton manual for your truck if you are not familiar with the procedure its not that bad, if you dont need it fixed immediately take the 2 hoses off from the firewall (One is supply and one return) and couple them together this will bypass the heater core until you are ready to fix it, good luck
Posted on Nov 10, 2008
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Posted on Jan 02, 2017
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