Recent content by Red350

  1. R

    1991 K1500 no heat issue

    Totally agree! One thing for sure is I would love to spend my winters in Texas!
  2. R

    1991 K1500 no heat issue

    It looks to be some “thread” residue and corrosion that blocked the passage. The coolant only had a needle size hole to go through ! The coolant is fine and I have plenty of heat Thanks for all your reply and I hope it will help someone else!
  3. R

    1991 K1500 no heat issue

    It’s been a long time, I didn’t had the chance to wrench on my truck but I finally found the problem Here’s some pictures
  4. R

    1991 K1500 no heat issue

    The outlet radiator core got the same bad flow and the nipple at the radiator let coolant go in the tank
  5. R

    1991 K1500 no heat issue

    I received the dorman fitting (two in case one broke) and the gm hose that go with it. I will try this and let you know!
  6. R

    1991 K1500 no heat issue

    No…. Radiator seems to flow fine also. Maybe like you said the quick fitting that goes into the intake doesn’t let enough coolant go through the hose
  7. R

    1991 K1500 no heat issue

    Thanks for your reply, Yes the outlet connect to the radiator. And there’s no valve or anything, it’s pretty simple. That’s what I thought too but I blow through it and the coolant started exiting the inlet heater tube…
  8. R

    1991 K1500 no heat issue

    Hi guys I’m new to the forum since I bought my first gmt400 ! I’ve been trying to figure out a no heat issue since I bought my 1991 sierra k1500 350 in last October preparing myself for the winter. Before my only solution to have heat in my truck is to cover the truck with fuel and strike a...
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