2000 Yukon-Long warm up time - partial heater core restriction possibly?

Discussion in 'Engine & Drivetrain' started by UmmScott, Dec 14, 2019.

  1. wjburken

    wjburken Supporting Member

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    1). I’m not mad about anything, just poking a little fun.

    2). All my vehicles have electric fans.

    3). We are talking about heating up so not sure why you are discussing A/C and cooling capabilities.

    4). I had a 2002 Impala and no way it warmed up that fast.

    That being said, when I think about warming up a vehicle, it’s when it’s 15F, or colder, outside.
     
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  2. BG1988

    BG1988 Full Access Member

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    what i did answer it


    right at the end it says
    also btw this Tahoe takes forever to warm up if that matters to you as there is nothing on the pulley(except for a water pump) to add additional load to the engine
     
  3. Fless

    Fless Full Access Member

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    And yours is a hybrid, right? Two different animals.
     
  4. BG1988

    BG1988 Full Access Member

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    it was quick as i did the oldest trick in the book to warm it up faster by turning everything on.. this will place additional load to the engine there by warming it up faster... you probably had air in the system from faulty elbow heater core lines. i replaced mine with metal ones
     
  5. liquify33

    liquify33 Full Access Member

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    Have you checked for proper/full coolant level? My first sign of a coolant leak was a cold heater trying to defrost windows.
     
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  6. Danno34

    Danno34 TYF Newbie

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    What you just explained is EXACTLY what was going on with my truck as well. I have a 2005 Yukon Denali XL. While everyone else’s responses is necessary to rule out (as I did) the ultimate issue is that the water pump needs to be replaced. Your truck is losing antifreeze and the pump isn’t doing it’s job by recirculating the coolant. I just replaced my water pump yesterday (also the thermostat even though it was fine figured why not ) and I replaced the upper radiator hose. My Yukon now heats perfectly. Only takes a few minutes to warm up on a cold morning. Interior heat is nice and toasty now. If you replace the water pump all of the issues you explained will be resolved. It’s an easy fix and you can easily do it yourself. If you have an Advanced Auto Parts Store near you use a 25% off code online to buy water pump and then pick it up in store. Not expensive at all and it’s a very good quality part.


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  7. Fless

    Fless Full Access Member

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    The OP said the coolant level is good and there are no leaks.
     
    Last edited: Dec 15, 2019
  8. UmmScott

    UmmScott Full Access Member

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    Yes i am not losing coolant. I know that for sure.

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  9. HiHoeSilver

    HiHoeSilver Away!

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    Yup. He's an HVAC/HACR guy, too. I trust him. ;)
     
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  10. UmmScott

    UmmScott Full Access Member

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    I mean..i could be crazy and not seeing something LOL

    But i will for sure double check. If my water pump wasnt pumping correctly then wouldnt i have overheating issues? It was great this summer and i took the truck to colorado this fall and had zero issues there.

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