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  1. em5568

    Please help! Heat doesnt work!

    Also, a couple other small things i'd like to add (In case it makes any difference, maybe it'll give someone a light bulb).. At one point, i did have heat. But only while driving, it worked fine. Then out of nowhere that stopped as well. I can also still feel air coming into the car even with...
  2. em5568

    Please help! Heat doesnt work!

    Alright, so i have triple checked the hoses. They are all right as per your pictures and the GM diagram i have, I'm almost starting to wonder if there is potential for there to be a factory defect in the new heater core i installed.
  3. em5568

    Please help! Heat doesnt work!

    East, you are a gentleman. I will double check that tomorrow when its light out and touch base with the orientation, though i have checked my lines per-diagram a few times and everything lines up. You never know, will touch base tomorrow! Thanks -E!
  4. em5568

    Please help! Heat doesnt work!

    Would you happen to know if using a radiator pressure tester would properly burp the coolant system? i believe they rent them at autozone.
  5. em5568

    Please help! Heat doesnt work!

    Yes, i didnt realize i was capable of seeing the actual door being positioned from where i was. It was a tight squeeze but attached are a couple pictures from full cold, no blower on and full hot no blower on. You can physically see it move open and closed. so it seems to be functioning...
  6. em5568

    Please help! Heat doesnt work!

    I double checked the actuator, i can visibly see the range of motion. It currently moves between the two lines indicated in red. I had installed a new actuator when my heat began giving me issues.
  7. em5568

    Please help! Heat doesnt work!

    Yes, the valve is functioning correctly. When the plunger is down, the two lines are roughly the same temperature after the truck begins to warm up. When the plunger is up, they begin to cool. Yes, i currently have the bottom cover removed exposing the heater core. When the blower is off, it...
  8. em5568

    Please help! Heat doesnt work!

    Yessir
  9. em5568

    Please help! Heat doesnt work!

    Up and down stream of the heater valve are roughly the same temperature, they get to around 98 degrees (By lazer thermostat testing). hand feel they feel roughly the same temp aswell. -The plunger on the heater valve is fully extended down -The plunger does move freely with the ignition off, it...
  10. em5568

    Please help! Heat doesnt work!

    Okay guys, Update. Today i got frustrated and decided to start from square one, to make sure everything is functioning properly in what i've replaced. I took out the tstat and temp checked it with hot water, it opened at 195 degrees. So thats good. I'm getting flow through my heat control...
  11. em5568

    Please help! Heat doesnt work!

    Alright guys, so i checked my hoses and the heater control valve. After the car warms up to running temperature (around 210 on my cluster gauge) the two hoses get very close together in temperature, but it just doesn't seem hot enough. Im getting flow through the control valve in both...
  12. em5568

    Please help! Heat doesnt work!

    I checked the core again today, i dont believe its the actuator only being because i can see it move and the heater core is currently not getting hotter than 'luke warm'. I believe it is a flow issue somewhere, one thing i did notice is that the hose comming from that vacuum solenoid thats...
  13. em5568

    Please help! Heat doesnt work!

    Awesome, thanks a bunch for the feedback guys. I'm going to make an attempt tomorrow during the daytime to check my lines/see if i can feel the heater control valve working. It's a brand new heater core so i don't think that could be the case, but i guess a pinched or clogged line somewhere down...
  14. em5568

    Tahoe owner from Long island, NY!

    What's going on guys, just wanted to stop by and introduce myself. My names E, I'm from long island, NY and i'm currently driving my 1999 Chevrolet tahoe with the 5.7. Looking forward to getting to know you all. Thanks - E
  15. em5568

    Please help! Heat doesnt work!

    Good morning all, and happy new year! I just wanted to thank you all in advance for any tips and information! I'm currently driving my 1999 Tahoe LE with the 5.7l Vortec, i've had the truck for 5 years, it currently has 180,000 miles on it and it's been an amazing truck. Next to no...

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