i have a new thermostat, hot water going in and out of heater core. all acuators vents and doors work. cant get hot air to come out period? any ideas???
Is your blower motor blowing any air?
The "Blender" vent actuator may not be operating. A large number of questions on here seem to be centered on Older GM's ( all makes can have this problem but GM by far seems to be the most common) The last two I repaired was in the blender sw the vacuum ports became restricted....( Def-AC-Upper-lower .. etc) ... and one was the vacuum actuator under the Dash ... Royal PITA ... good luck ....
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