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Message: <blockquote data-quote="Blazin_Jason" data-source="post: 3755955" data-attributes="member: 563679"><p>Why didn't you ask this on s10 forum? =)  You said that the engine gets up to normal operating temp, which it should show on your temp gauge.  That would indicate that the thermostat it probably working correctly.  However when you pull out the stat you may notice it is stuck open.  So changing it might help.  I would also feel the hoses going to the heater core when the truck is hot.  This can determine if the core is clogged or not.  If one hose is hot and the other is not (the outlet) then it's probably clogged.  A coolant flush may resolve the problem.  If it's the heater core, start searching on s10forum on how to replace it.  It wouldn't be a cheap repair to have done as it's time consuming.</p></blockquote><p></p>

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