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  1. 2011TXDenali

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Finally got the air bag recall done at the dealership. Unfortunately, the "Service Air Bag" message still randomly appears off and on. Probably a loose sensor somewhere.
  2. 2011TXDenali

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Replaced the oil pressure sensor for a second time on my Yukon over the weekend. Holy crap, I forgot how much that sucks doing. My wrist and forearm still hurt.
  3. 2011TXDenali

    Oil pan gasket leak?

    So I finally got around to working on my Yukon this week. I replaced the O-ring on the oil pickup line, which seems to have solved my low oil pressure warning that was coming on. I also replaced the oil pan gasket and oil cooler lines gasket. This is the video I watched and followed that was...
  4. 2011TXDenali

    Oil pan gasket leak?

    Yeah, I've read to do both if you already have the oil pan out. I don't think I want to know about replacing the rear main seal. I'm no mechanic, I just do what I see on YouTube.
  5. 2011TXDenali

    Oil pan gasket leak?

    That seems to be the cheapest and easiest solution to try first. I just replaced those oil cooler lines and gasket about a year ago. But maybe a better gasket will do it.
  6. 2011TXDenali

    Oil pan gasket leak?

    I've notice the oil pressure fluctuating a bunch, a couple times it has gone down to zero and the "Stop engine" warning message has come on. I replaced the oil pressure sensor and screen about 2 years ago.
  7. 2011TXDenali

    Oil pan gasket leak?

    I hear you on that, I'm close to hitting 170K on mine. But I also think the leak is affecting the oil pressure. So I probably need to take care of it. Thanks for the advice.
  8. 2011TXDenali

    Oil pan gasket leak?

    Unfortunately, I don't have a torque wrench.
  9. 2011TXDenali

    Oil pan gasket leak?

    Hey guys, I finally got my coolant leak issues fixed, now moving on to an oil leak. From reading various threads it looks like I need to replace the oil pan gasket. But I just wanted to confirm with people that know way more than I do. Pics are below. Or, let me know what else it could be...
  10. 2011TXDenali

    Another coolant leak help thread!

    Thanks, after searching the engine, it looks like the T connectors are the source of the leak! I couldn't tell which one was leaking but probably safe to replace both. Which parts would I need?
  11. 2011TXDenali

    Another coolant leak help thread!

    Thanks for the tip! After going up a little bit further, it looks like it might be coming from this hose.
  12. 2011TXDenali

    Another coolant leak help thread!

    Hey everyone, I'm hoping to get some help with diagnosing the coolant leak on my 2011 Denali. I noticed the coolant level was pretty low in the tank and filled it up. I went out for some lunch after and when I came back out to the truck, it looked like someone basically poured out a new bottle...
  13. 2011TXDenali

    Ordering correct transmission cooler lines

    Thanks everyone for the tip about the codes in the glovebox!
  14. 2011TXDenali

    Ordering correct transmission cooler lines

    This pic was from the passenger side. Those are the transmission lines that you see there. I replaced the engine oil cooler lines a few months ago. But it is a big mess.
  15. 2011TXDenali

    ACDelco Professional 9748RR Spark Plug Wire Set - work for 5.3 Flex? 2008 LT.

    Just replaced the wires on my 2011 Yukon, 9748RR from Amazon and they work fine.
  16. 2011TXDenali

    Ordering correct transmission cooler lines

    I need to replace the transmission cooler lines on my 2011 Yukon Denali since they are starting to leak. When I go to look up the part, it gives two options of with or without Heavy Duty Transmission Cooling Package (KNP). How would I know if my Yukon does or doesn't have that? Thanks in...
  17. 2011TXDenali

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    I was getting P0300 and P0304 codes along with a couple others I can't remember. Finally swapped out the spark plugs, wires, and an ignition coil. We got the Yukon with 120K miles, so I am guessing the plugs and wires were probably original. Codes are gone, everything is back to normal. Amazing...
  18. 2011TXDenali

    Oil Pressure Sensor Stuck?!

    I wasn't about to pay someone to replace my oil pressure sensor, but holy crap it was way harder than it should have been. :Big Laugh:
  19. 2011TXDenali

    Oil sensor casues shake/studder. Please help

    Yes, I confirmed the shudder is happening when the AFM is switching between V4 and V8 modes. I want to get it disabled by sending in my PCM to LT1swap but can't really be without our second car for a week. Sadly, it will probably have to wait until my kids' 80 sports are done later in the spring...
  20. 2011TXDenali

    Oil sensor casues shake/studder. Please help

    Sorry to bring up an old thread, but did you ever resolve this issue? I have the same thing going on in my Yukon. I replaced the oil pressure sensor about a year ago but had this shudder problem when slowing down/coming to a stop around 1K even before I got the error code and replaced it.
  21. 2011TXDenali

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Yes, first time doing the cooler lines. It wasn't too bad. But yes, I did cut the hoses, no need to keep them intact. It was much easier to pull them out that way. The dumb radiator clips slowed me down, but I found a video on YouTube that helped with removing them. I think the shop I took my...
  22. 2011TXDenali

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    So I finally got around to cleaning my original throttle body and put it back in my Yukon. I'll be returning the one I got on Amazon Warehouse. My idle is back to normal. I don't think it needed to relearn but I did it anyway. I also replaced the oil cooler lines. They were a disaster and...
  23. 2011TXDenali

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    What did that cost you?
  24. 2011TXDenali

    What did you do to your NNBS GMT900 Tahoe/Yukon Today?

    Thanks for the offer. I'm out in McKinney and don't really head out that way. I appreciate it though.
  25. 2011TXDenali

    Headlights look awful.

    I've had good luck with Depo brand aftermarket lights for various cars in the past.

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