1991 cadillac fleetwood w/5L no heat? - Chevy Impala Forums
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post #1 of (permalink) Old 11-05-2007
paulski
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1991 cadillac fleetwood w/5L no heat?

I'm the new owner previous owner changed out the heater core cold air when defroster /or heater is on
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post #2 of (permalink) Old 11-05-2007
fordman
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either low coolant, bad thermostat, or a bad heater control valve under the hood, in line with the heater hoses.
post #3 of (permalink) Old 11-05-2007
troy r
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theromstate is stuck replace it
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