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1996 Chevrolet 3500 Pickup Question: my truck heater will not heat.

 

Question

Tombebo, Lubbock, TX, November 29, 2012, 20:16
 Rookie

Installed thermostat with a 195 degree temp.Replaced water pump and coolant. Ran water threw heater core, both sides. still no heat to heater core. both lines to core cold. warm day ran truck for 30 min got engine to 200 degrees still lines to core cold. radiator nice n hot. don't see coolant circulating back to radiator from heater core.

2 Answers
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  • Answer #1

    goodguy November 29, 2012, 20:51
     Master

    sounds like a bad t stat but try to bleed system first

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  • Answer #2

    Greg's Orange Auto (13269 Answers) , Orange, CA - (714) 361-9386
    globalhelper November 30, 2012, 06:11
     Master

    i think you have a heater control valve inline with heater hoses ck to see if its stuck closed

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    Tombebo, December 01, 2012, 12:57
     Rookie

    Thank you for your help. I did find the problem this truck had a different engine than the original and the guy who insalled it routed the heater core wrong. once again thank you for your help.

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    goodguy, December 02, 2012, 00:20
     Master

    thats what we are hear for I am glad you found the problem

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