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  1. N

    200,000 Coming up Fast. What services do you recommend?

    If you cant determine when the rad was replaced, I would do that. Most likely its original. And the plugs, as mentioned. And all fluids. But they should be current, anyway.
  2. N

    Radiator replacement

    Oh. Ok. Now I see. haha. And now I'm 99% sure the cost reduction implemented to better achieve the online discount price point was to provide the fittings and have consumer install them. Not best business practices I might say.
  3. N

    Radiator replacement

    splorg: Thanks for the pics. Whats that thing on the underside of the trans line? Looks like a key tool of some sort?? Other than that, your line connections look just like mine I would say. And if that's true, then it reasons that part of the cost reduction for online sales of this particular...
  4. N

    Radiator replacement

    The fittings came w/ the rad, but just not installed...
  5. N

    Radiator replacement

    splorg: If at all possible, can you shoot a pic of the tranny line connection area at your radiator? I am wondering why your duralast (which seems to be same pn#cu2423 as what I bought) had fittings installed and mine did not. I wonder if that is why mine was cheaper? I "got" to do more work...
  6. N

    Radiator replacement

    I didn't expect issues w/ mine, but who does? I've bought them online 2x before w/ zero issues. But, I wont buy an axle online again. Had issues w/ that though.
  7. N

    Radiator replacement

    It was a rockauto purchase. My guess is I would get a refund if this thing doesn't seal up. I've received other refunds from them. Hopefullly it's sealed.
  8. N

    Radiator replacement

    It's not leaking on the tube. It's the fitting seal AT the rad. Rad job on this truck is cake....if the lines don't leak...haha.
  9. N

    Transmission flare fitting at radiator

    Soo.....I snugged it some more. Prob 1/6th of 1/6th rotation...hehe. Maybe 10degrees? Ever so little but it is TIGHT. Drove it again. Pushed rpm to 3500-4000 a few times. Right now looks good. If it leaks again I am trashing it I think. And go acdelco.
  10. N

    Radiator replacement

    Thanks. That autozone link shows the CU2423, which is the unit I bought and am having issues w/ tranny cooler fitting leak @ rad. I have the thread going right now. it's on fitting leaks. I just posted in it.
  11. N

    Transmission flare fitting at radiator

    So...it has begun oozing tranny fluid out my problem flare fitting. I could: 1. Snug it more...1/8 turn or so? if it snaps then it snaps.. 2. Trash it. Be done w/ it and buy diff model...say ACdelco 21650 that apparently has fittings installed. 3. Try to warranty it out w/ rockauto. But if it...
  12. N

    Radiator replacement

    Splorg: Did you buy and install OEM unit? Did you buy the 21650 model? And did it have fittings installed? Mine is oozing now from my problems and im so "done" with this issue.
  13. N

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

    I just replaced mine a week ago. Still have it. Here ya go...
  14. N

    Radiator replacement

    I just did this last weekend. I would NOT get one that u have to install fittings if yours are like mine. No fun. Radiator is easy. Fittings sucked. My experience with them: https://www.tahoeyukonforum.com/threads/transmission-flare-fitting-at-radiator.118157/
  15. N

    New Yukon 2002 SLT - How did I do?

    I'm in Michigan. I know rust. As my suggestion, buy your choice of rust lube, (mine is Fluid Film) and liberally spray INSIDE the rockers. Pull existing plugs and spray via that hole, or make your own hole and plug them. My 2001 is from TX and have had it in MI for 5 winters and the body is...
  16. N

    Transmission flare fitting at radiator

    Same thought as me, but the link I posted to was referenced from another site talking on hydraulics so it must be a "thing". The one referenced is very high-end and appears for very high pressure and for sealing surface imperfections. It is strange though, for sure.
  17. N

    Transmission flare fitting at radiator

    Update: The teflon is holding so far. Have prob 2-3hrs run time on it and no leaks. One tranny line is sealed w/out any sealer and the other has the teflon on it. Both are ok. Also, I did come across an expensive sealer made for minor flare imperfections, made by Henkel. In case somebody...
  18. N

    Transmission flare fitting at radiator

    Old fittings....new ones I had to install are exactly like them.
  19. N

    Transmission flare fitting at radiator

    JCB2, I'm with ya. I agree about the threads. However, there is no o-ring on the new fittings or the old one. They are purely meant to seal via flare fitting. My liquid teflon did seal it up. Atleast for now, and I hope for a very long time. Who knows, maybe the teflon lube allowed it to...
  20. N

    Transmission flare fitting at radiator

    I reinstalled it. Cleaned all threads with brake cleaner. Liberal liquid Teflon on threads. Will allow cure 24hrs. Will try it tomorrow and respond with results. I dont like sealing things this way but I'm sure lots of crazy things are done that we never know of. Thank u all very much for...
  21. N

    Transmission flare fitting at radiator

    Yeah. A simple tapered thread with o-ring seal seems like a far better and easier design. Wish it had o-ring seal. It looked like just a couple threads with light thread locker so it doesn't back out. I read on a forum not to use tape in risk of it getting into the fluid. They said liquid was...
  22. N

    Transmission flare fitting at radiator

    I didn't realise until tonight that some rad come with the fittings installed. Mine didn't. Wish I had known. Now I'm trying desperately to solve it.
  23. N

    Transmission flare fitting at radiator

    I will check on that but would this stuff work similar? Got it today.
  24. N

    Transmission flare fitting at radiator

    I will try to clarify. The fittings in above pic from rockauto have to be installed and then the line snaps into them. They don't come installed. Maybe I could reuse my old ones from old rad? But when tightened into rad they leak.
  25. N

    Transmission flare fitting at radiator

    This is the unit from rockauto and these are the fitting to connect rad to trans line.

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