Question about 1987 GMC Jimmy
The blower motor and fan run and only cold air comes out....What should I check for?
The first thing i'd do is replace the engine thermostat. It sounds like the thermostat is not opening allowing the hot coolant to circulate through the heater core, therefore no heat from heater.
Posted on Oct 03, 2008
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Posted on Jan 02, 2017
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