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  1. RLC2020

    Oil for 5.3L to reduce consumption

    I'm going to dump the penzoil out and refill with OEM and see what happens. Seems like a lot of consumption to not have a trail of blue smoke behind me. Not sure where it's all going, but I'll see if AC Delco oil makes a difference.
  2. RLC2020

    Oil for 5.3L to reduce consumption

    I get that, my question is do I have something seriously wrong internally, or are these engines very sensitive to what oil is run in them. In my Hemi Ram trucks they made all sorts of valve noise with the stock mopar oil so I switched to the penzoil UP as suggested by everyone on that forum...
  3. RLC2020

    Oil for 5.3L to reduce consumption

    My 2015 5.3L Yukon recently started burning oil after I switched to penzoil UP. I've owned the truck for 10k miles now (at 63k currently, purchased with 53k). The first oil (done at dealership where I bought it) went 4500 miles without burning more than 1/2 quart. I added a JLT catch can, but...
  4. RLC2020

    Trans feels like its slipping/bucking

    Sounds like the torque converter is on it's way out. Or, you have very worn out trans fluid and it cannot maintain pressure. I'd start by dropping the pan, do a fluid / filter swap and check the magnet for excessive metal in the pan. See if the problem goes away with fresh fluid / filter. If it...
  5. RLC2020

    Engine warranty?

    You got an amazing deal on that Denali. I just paid $41k for my slt with 53k miles on it. You got one hell of a deal, enjoy it
  6. RLC2020

    Flip the pill vs. tap and plug?

    I ended up just flipping the pill. Turns out that my 2015 actually has the bolt on style lines instead of the older clip style. I may buy the newer style thermostat housing down the road, but for now it's running much cooler. Didn't go over 135 on my way to work this morning!
  7. RLC2020

    Flip the pill vs. tap and plug?

    I'm doing a full service on my trans this weekend. Amsoil fluid, new filter, and I'm either going to "flip the pill" or tap and plug the thermostat housing. Not sure what method would be best honestly. I can't do the newly release thermostat replacement because I have a 2015 with the clip style...
  8. RLC2020

    Automatic transmission fluid and differentials

    ^ I agree. Advance was able to order the AC delco OEM filter for me.
  9. RLC2020

    Automatic transmission fluid and differentials

    OEM trans filter, or is the carquest from autozone alright to use? My GM dealer is a 30min drive and I'm feeling lazy. I don't trust anything from amazon to be genuine so I'm putting anything from there in my trans.
  10. RLC2020

    Automatic transmission fluid and differentials

    I ordered 3 gallons of signiture series ATF and 4 quarts of severe gear fluid. Should be enough to swap everything over. I'll be getting an oem filter for the trans before I swap the fluids as well. $250 for fluids (and that's with the discount). Ouch!
  11. RLC2020

    Automatic transmission fluid and differentials

    I know I'm resurrecting a 5 month old thread here, but does anyone have a recommendation on where to get the Amsoil atf other than on their website? I was hoping to pick some up on my way home today and get this service done that I've been putting off. I have 59k miles on my XL and figure it's...
  12. RLC2020

    Updated Thermal Control Valve

    So, After all this I'm thinking I'm just going to tap and plug the thermostat housing instead of flipping the pill or trying to adapt the new style thermostat to my 2015. I live in Florida and it never gets below 40 where I am and is generally 80-95 degrees out 9months out of the year. I'm...
  13. RLC2020

    Updated Thermal Control Valve

    That's a good idea, just changing out the internal components to avoid the coolant line connectors being different. Could someone check when they are about to do the swap to see if the thermostat itself fits in the new and old housings? If they are interchangeable I'll order one and just use my...
  14. RLC2020

    Updated Thermal Control Valve

    I have a 2015 as well and am waiting to order this to see if we need a different part or if this new part can be adapted to use on a 2015 model. Seems odd that they would release a part that doesn't work for just 1 model year.
  15. RLC2020

    Updated Thermal Control Valve

    where did you purchase from? Everywhere that I see it there's $15+ for shipping which just seems silly to me. Do we have a promotional code for any parts vendors associated with this forum?
  16. RLC2020

    What are these wheels worth?

    At least $800 if the tires are good. What is the seller asking for them?
  17. RLC2020

    odd stumble when accelerating

    I did not notice any cracks, but I'll clean the plug up when I get home and do a better inspection of it.
  18. RLC2020

    odd stumble when accelerating

    So, Over the weekend I was driving the truck and it did the stumble but this time it actually lit the CEL at the same time, It had not previously thrown a code. Flashing CEL so I pulled over and by the time I stopped so did the CEL. Drove fine after that, got it home and checked the code, PO307...
  19. RLC2020

    odd stumble when accelerating

    Well, I guess I spoke too soon. I didn't drive the truck for about a week, I took it out yesterday and it stumbled again after the second gear shift. I'll have to check the fuel pressure for sure. I may just bring it in somewhere as I really don't have the tools to diagnose this myself. It's...
  20. RLC2020

    What's my 15' SLT Yukon XL worth (Dec. 2021)?

    I have the same truck, 56k miles on it with nav, sunroof, entertainment package, but no tow package. I got offered $39,990 from Vroom. I was just curious what they were going to offer me. I'd assume you'd be close to that. Depends on the week though. I put my wife's Enclave into carvana 6 months...
  21. RLC2020

    odd stumble when accelerating

    So, to update this thread, i think the issue has been resolved. Believe it or not, I used some snake oil and I'm pretty sure the issue is gone. I dumped a bottle of the Royal Purple Max Clean fuel system cleaner in and I'm about halfway through the tank and it's running 100% smoothly at this...
  22. RLC2020

    Escalade side mirrors on a Tahoe LTZ!

    Got them installed last night. The color is a damn near perfect match. Everything works except the blind spot, I don't think these mirrors have that feature even though the listing said it did. I can live without that thought. They look great and are way bigger than stock.
  23. RLC2020

    odd stumble when accelerating

    I just double checked. I ordered the "+" model. Once it arrives I'll be downloading the app and checking things out. Also: This morning I drove the truck in Tow/Haul mode and it drove 100% perfect. Still not sure if it's the trans is upshifting too quickly and the engine falls out of the power...
  24. RLC2020

    odd stumble when accelerating

    I haven't done either of those yet. I need to acquire the equipment to do so. Been pretty busy lately and haven't had time to mess with it just yet. I just reread the thread and saw that the OBDlinkMX was recommended so I ordered one off amazon, should be here tomorrow. Once that arrives I'll...
  25. RLC2020

    Escalade side mirrors on a Tahoe LTZ!

    I'm about to do this mod as well. I just ordered a set off ebay that are Passion Red from a 2018 Escalade. I hope they match my Crystal Red Tintcoat! I'll post pictures when I do the swap next week. I tow a boat and a utility trailer every week and these tiny mirrors are a joke!

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