Mechanics

GMC VAN ENGINE PROBLEM

1993 GMC Van • 130,000 miles

Had freeze plugs replace, thermostat replaced twice (185 degree I think, stock as per parts house), system back flushed. Engine will heat up and put a out some heat - but if driven over 45 mph, in colder weather, engine cools & heater blows cold.
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Guest
February 2, 2013.



Sounds like a bad heater core. It is most likely clogged

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