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No heat

(1991 Chevrolet G Series Van (G20))
in Spokane, WA on October 13, 2010
heater blows cold air when turned on.
Displaying 3 answers & 0 comments
Popular Answer
on May 06, 2014
I noticed mine blowing coldish on the feet only this winter when I took it for a trip.
on October 13, 2010
themostat stuck open or heater core plug
on January 25, 2011
could be heater control valve located just in front of heater core
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