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    2018 Denali

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ksiesel's Achievements


Enthusiast (4/11)



  1. I believe the wheels from 19+ will fit the K2, however the TPMS sensors use a different frequency so you will have to swap them or get new ones that work with the K2.
  2. Sounds like a vacuum pump failure. I’d recommend calling your dealer with the symptoms as I believe GM has a program covering these even beyond the warranty period. I’m sure others will be along to share specifics of that coverage program.
  3. Each sensor has a unique sensor ID. Your truck has a table that these sensor ID's are written into when you do the sensor learn procedure. If you removed the sensors from the vehicle (as they were pulled with the wheels), you will get a TPMS light after you drive enough. Having said that, if you put your old wheels and tires in the bed, your truck will go on reading them and not give any codes or lights. When you perform the TPMS learn procedure, what you are doing is telling the truck which sensor ID to write to memory that each wheel location (LF, RF, RR, LR) in that order.
  4. The dealer may be offering you a bit on the low side for your ‘17. One thing to remember is that you will not be paying tax on the trade in value so if the dealer offers $50k for trade and your sales tax rate is 7%, that would be $3500. If you were to do a private party sale, that’s how much more you’d have to sell it for to break even.
  5. It’s not a T1, but the magnetic ride on my 2018 Denali is impressive. It’s the best riding truck I’ve ever driven.
  6. Search for this "Fernco PQC-102 2" Qwik Cap". Its what I used. You don't need the clamp that comes with it. This works very well.
  7. In the 2018, it’s not really a seat cooler as there is no cooling module in the system. Instead, it’s a ventilation fan so until your cabin temp comes down (from the A/C), all they are doing is pulling hot air through the seat. In terms of flow, they pull the air through the seat and blow it out the back and bottom. There are two fan motors per seat, one for the bottom and one for the back. I have actually been pretty impressed with how much difference the ventilation makes vs just having a standard leather seat.
  8. How difficult was it to get the old one off the valve cover, and did you end up breaking any of the plastic off that you struggled to find among the rockers?
  9. Can you give the part number for this? Also, can you confirm that you didn't need to modify the locking grooves prior to installing?
  10. You are correct to be cautious before ordering. If it were me, I’d make sure anything I ordered fit a 2018 as well before I ordered it since as you know, your 2019 LD is really the same truck as a 2018.
  11. On the 2018’s, there is no RPO code sticker anymore. They now use a barcode this is in the drivers door frame. You can scan it with a QR code reader and it will tell you a partial RPO options list. The best way to approach it though is to send your VIN to GM Customer Care and ask for the build sheet report OR do the same with your local dealer. They can pull it up on GM’s system and print it for you.
  12. It is a thermal barrier that is intended to reduce the stress due to thermal expansion on the joint between the condenser and the tank that is attached to the drivers side of the condenser. I would say the jury is still out as to how effective this is as a fix, but this is certainly the area where most people are having cracks that cause all of their refrigerant to leak out and then have no A/C.
  13. I haven’t looked at the K2 fuel tank pressure sensor setup, but I replaced the sensor on my GMT900 without removing the tank or the bed. I managed to lay under it and reach my arm around the tank and do it completely by feel. This may be an option for the K2 as well. On the GMT900, the fuel tank pressure sensor had no mounting hardware, it was just a grommet on the sensor that you press through the hole in the fuel tank header plate. All I had to do was unhook the electrical connector and pry the sensor out of the bushing.
  14. Have you considered a GM 1500 with the 2.7 Turbo. I don’t think that has AFM and many are liking that mill. I personally have not driven one.
  15. Gmt900 and k2xx both use 315 so your proposed swap is fine. It’s the new T1 that uses 433.
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