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  1. SpThomass

    Idles at normal temp, but when I drive off it gets hot

    2006 GMC Yukon denali XL, LQ4 6.0 Weird little issue I’m having that’s happened three times now in the past two weeks. It idles perfectly fine, specifically between 204.4-206.8 degrees, no matter how long I idle it. The issue I have is that the moment I drive off after idling it gets hot. The...
  2. SpThomass

    Weird Issue Hard To Explain

    Sorry for the late reply, haven’t been feeling well. But I assume so, everything drive train related is stock for now atleast. Everything on it now has been there since the problem started. And that’s what I was thinking too, the TPS.
  3. SpThomass

    Weird Issue Hard To Explain

    Sorry for the late reply man, I haven’t been feeling well so I haven’t been on. I took it to my mechanic who’s worked on it for over a year now and when he did the fluid change he said everything looked fine, no specs in the fluid/pan, it was dirty but because it had been a while since I had it...
  4. SpThomass

    Weird Issue Hard To Explain

    Thanks man, I just keep searching for anything related to this issue but I can’t find anything. But thanks for giving me something too look further into!
  5. SpThomass

    Weird Issue Hard To Explain

    The whine in the second video is my steering gear dying lol. Before this started, it would shift into second perfectly without the unnecessary high rpms and the about to explode feeling. Now, no matter how I’m pushing on the pedal (hard or soft) it does this. Also, there’s no codes and no CEL...
  6. SpThomass

    Weird Issue Hard To Explain

    Hey guys! For starters I have an 06 Yukon denali XL, 6.0, 223k miles! i posted about this back in December, and it’s hard to explain, but basically when driving after a dead stop (red light or something) when going into second it just loves to hold onto first for some reason. Other than that it...
  7. SpThomass

    Does the winter/cold weather delay shift points?

    Could it be as simple as a clogged tranny filter? And maybe a complete tranny fluid flush? also thanks for the help man!
  8. SpThomass

    Does the winter/cold weather delay shift points?

    I’ve tried to let it warm up while idling, and it gets to about operating temperature (about 10-20 degrees below it) and that doesn’t help either. So I’m starting to think it’s the cold weather less and less, unless it needs to be exactly at operating temp. I recently read a thread on here...
  9. SpThomass

    Does the winter/cold weather delay shift points?

    well I’m in New York now and last week we got hit with a snow storm, so temperatures have been on the lower end. Today’s the highest with 55, but it’s been in the 20-30s. Ive noticed the shifts have gotten better but it’s still doing it. The shifts themselves aren’t rough, and my tuner...
  10. SpThomass

    Does the winter/cold weather delay shift points?

    its about to hit 225k! Before the winter storm it was fine, so I think it is the cold but I have no idea. I had it checked by a local GMC dealership and they said it was good for its age and that since I stopped driving immediately after I noticed something was wrong (the fluid loss) there...
  11. SpThomass

    Does the winter/cold weather delay shift points?

    thanks man! ill look at my RPO codes, I didn’t know the specific one for the trans! The last time I had the fluid completely serviced was when all the fluid was lost on the palisades a couple months ago. Maybe like 3 or 4 months, but I’ll definitely check again tomorrow! thanks for the help man!
  12. SpThomass

    Does the winter/cold weather delay shift points?

    Hey guys, I got an 06 Denali Xl 6.0 and I’m pretty sure a 4L60e, I’ve read that it might be a 65 though I’m doubt it. my question is, and I don’t wanna sound dumb, but it’s my first winter outside of California so this is all new to me. Does the winter/ cold or whatever delay shift points? I...
  13. SpThomass

    Headliner measurements?

    thanks Matthew! you really know the ins and outs of this haha! Is the sunroof visor hard to do, or any different because it goes back and forth? Also I was going to do a flat black Instead of the OEM tan, I personally think it would look better, so hopefully it turns out nice! But anyways thanks...
  14. SpThomass

    Headliner measurements?

    Thanks man! Hopefully he replies!
  15. SpThomass

    Headliner measurements?

    For starters I have a 2006 GMC Yukon denali xl. I’m looking to replace the headliner with custom fabric and fiber optic lights to create a star effect. Plus the fabric is starting to sag and has come off slightly on some of the edges. my question is; does anyone know the measurements of the...
  16. SpThomass

    Which engine oil do you use?

    I’ve heard some good things about Amazon’s oil, I’ll probably give it a try at some point. And true it’s not a craft beer but I didn’t say it was haha its just the best overall in my opinion!
  17. SpThomass

    Which engine oil do you use?

    I’ve noticed a lot of people with these trucks not necessarily the same gen using acdelco oil filters, Besides being made specifically for the type of car it’s for, is there another use or benefit? Just curious! :)
  18. SpThomass

    Which engine oil do you use?

    Do you notice any better results with Valvoline vs anything else? And yea I’m not much for changing it too often but I’ve been trying to raise my gas mileage so I’m doing it more often among other things.
  19. SpThomass

    Which engine oil do you use?

    Haha It was never my intentions to start a debate or anything. In school we were talking about the oil we use and some people were surprised I used RP, so I was mainly curious as to what others with the same gen trucks were running. Also with everything going on RP is a little expensive for me...
  20. SpThomass

    Which engine oil do you use?

    For starters I drive a 2006 GMC Yukon denali xl, LQ4 6.0. i wasn’t really sure wether or not to post this here or the engine/drivetrain category. So if this is the wrong place sorry haha. But I was just curious as to what kind of oil you guys use, I’ve been running royal purple for every oil...
  21. SpThomass

    What does your MPG look like?

    sorry for the late reply dude, I was waiting to fill up my tank again to get more information before I relied. I definitely have an 6.0L LQ4 but I understand what your saying about the values presented sounding like a 5.3L. And no offense taken maybe I didn’t give enough information to begin...
  22. SpThomass

    What do you think of this 2006 XL Denali

    I am clearly late to this but just a couple things I noticed; why is the oil pressure gage maxed out at 80? Was it driven and that’s why the transmission temp looks to be already at the middle of the gage or is there an issue? Also 11k? That’s a little high is it not?
  23. SpThomass

    What does your MPG look like?

    oh okay cool, I didn’t know that I had a reserve, tbh I was just going off of what google said lol. I was always curious since it always filled up to 22-23. You said about a 300 mile range but I’m getting around 510-520 mile range, does that change the situation or no?
  24. SpThomass

    What does your MPG look like?

    Just wanted to say, my denali is AWD so I don’t think it’s predisposed to having poor gas mileage. I’m getting 15.8 currently and that’s over a 500 mile range. But how’s the hybrid one, I heard that it has really good acceleration since it’s more electric?
  25. SpThomass

    What does your MPG look like?

    Sorry for the late reply after creating the thread. But all in all you guys get pretty good mileage. I haven’t towed anything yet, tbh I’m afraid too haha. Another thing I’ve noticed about mine that you guys have mentioned is, mine doesn’t have variation at all. Like after a day or two it will...

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