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1990 Chevrolet 2500 Pickup Question: how hard is it to change the heat actuator on a 1990 2500 non a/c truck and wher

 

Question

cornhuskerchevy, 5.7L V8, Omaha, NE, October 18, 2013, 04:15
 Rookie

no heat and it blow's cold out of all the vents

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  • Answer #1

    Greg's Orange Auto (13020 Answers) , Orange, CA - (714) 361-9386
    globalhelper October 18, 2013, 06:10
     Master

    poss heater control valve is stuck closed

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    cornhuskerchevy, October 19, 2013, 07:10
     Rookie

    is this under the dash ?
    Thank You Very Much

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  • Answer #2

    pushrod October 18, 2013, 07:01
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     Master

    Both heater hoses hot after engine has reached normal operating temp? If not, possible heater core restriction or stuck open thermostat! Cooling system FULL?

    Heater core can be flushed out, it might help.

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    cornhuskerchevy, October 19, 2013, 07:13
     Rookie

    cooling system is full, both hoses are hot at operating temp, the temp rise's like the thermostat is ok, I just drove it fifty mile's with no issue's just no heat, I bought it a month ago at a auction county shop owned, and it has sat for a few month's
    Thank You Very Much

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  • Answer #3

    Rojo1 October 18, 2013, 23:15
     Technician

    By "heat actuator" are you referring to the electronic actuator mounted to the air box inside the cab?

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    pushrod, October 19, 2013, 03:24
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     Master

    I think it is cable controlled on this one!

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    cornhuskerchevy, October 19, 2013, 07:09
     Rookie

    I was told there was a gear driven actuator but it may be cable, I am wandering which way to go into the dash first
    thank you

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    pushrod, October 19, 2013, 09:07
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     Master

    Drop the glove box down, look on top of the heater box.

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    cornhuskerchevy, October 20, 2013, 06:49
     Rookie

    thank you I will do that today

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