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  1. WalleyeMikeIII

    2022 Yukon Denali XL completely shut off while driving

    Get it towed to dealer and have it diagnosed. There are a couple known shortcomings, the most likely is bad fuel pump module, but there are also reported main and rod bearing fails, and lifter fails; both of which would necessitate an engine replacement. Your dealer will sort it out. Might...
  2. WalleyeMikeIII

    24 Tahoe 6.2L - Flashing Engine Light

    Your powertrain warranty is 5 years, 60k miles, so if it is engine internals, you are covered...for a bit more. It is useful to take a video of the issue happening that also includes the mileage...you can use this to your advantage (aside from the danger of running your ride while using phone)...
  3. WalleyeMikeIII

    New to 4WD, any info and advice appreciated

    Not completely true. 4 Low engages a lower gear in the transfer case, but the transmission is still available to shift through it's 10 gears (although guessing maybe 4 Low locks out some of the higher ones.). The Owner's Manual says you can use 4 Low up to 45 mph.... So, you get a lower final...
  4. WalleyeMikeIII

    What are these extra wiring harnesses for? (Manx & Universal)

    It is the OBD II port...standard in industry to connect to all the vehicle's modules. Service will use it to read codes, update module calibrations as needed, etc. Likely they harness for this is an interposer, plugged between the OBD II port provided by the vehicle manufacturer and this...
  5. WalleyeMikeIII

    Has anyone successfully added adaptive cruise control?

    Not likely it will be possible….GM has this architecture locked down. Would need programming updated, and GM not letting people add options that were not on their original build.
  6. WalleyeMikeIII

    Fuel efficiency drop in newer models ?

    In calm conditions (no wind), flat ground, 65MPH, I routinely get 21-22MPG on highway in my 22 XL Denali. Wind, heavy foot, etc, will decrease it..
  7. WalleyeMikeIII

    2022 Tahoe - Ticking Noise Under Car/Engine - Help!

    My 22 Denali makes the same noise. Have always wondered if it was transfer case. 29.5k miles and still does it, no notable issues so far, 29.5k smooth miles.
  8. WalleyeMikeIII

    Best and MostReliable Engine

    Did you have issues w/ the 6.2?
  9. WalleyeMikeIII

    Transmission Control Body Screen Fail

    Yes, had it done yesterday. Have driven 6 miles since then, so too early to report any noticeable changes.
  10. WalleyeMikeIII

    Transmission Control Body Screen Fail

    My Dealer called today, saying my vehicle needed this "recall." Although I do not think it is trully a recall, rather a service update. (see the document.) Anybody fully understand this? "Transmission Control Body" is the Valve Body? What is the "Transmission Control Body Screen" the bulletin...
  11. WalleyeMikeIII

    Knapp GM Service Contract - too good to be true?

    Or, just invest the cash as you suggest and skip the service contract, and pay your repairs out of that $4k investment...my guess is at the end of ownership, if you do all the regular maintenance, you'll still have principal remaining, as well as the some of the gains. (The above must be true on...
  12. WalleyeMikeIII

    Question from a first time buyer - Tahoe or Yukon advantages/disadvantages

    You think this may have more to do with the type of buyer who buys them than the truck itself? May be more apt to do maintenance, beat on it less, fewer commercial users, etc? Numbers say Chevy outsells GMC by about 2x, but the gap is closing in recent years (GM doing good here at marketing)...
  13. WalleyeMikeIII

    Question from a first time buyer - Tahoe or Yukon advantages/disadvantages

    Give this thread a read: https://www.tahoeyukonforum.com/threads/real-differences-between-yukon-and-tahoe.138591/ My opinion is the GMC is a better value (Yes, costs about $3K more than the similarly equipped chevy), but you will get more value (things like 3 years of OnStar and Data, laminated...
  14. WalleyeMikeIII

    2022 Yukon 2nd/3rd Row Floor Wet...hasn't rained here in weeks.

    Rear AC Unit condensation discharge is right below the rear HVAC evaporator, right behind the passenger side rear wheel, crawl under there and look up, will see hearter and A/C hoses entering from below, and the drains are there as well. If it were plugged, it might overflow into the floor of...
  15. WalleyeMikeIII

    2022 Yukon 2nd/3rd Row Floor Wet...hasn't rained here in weeks.

    Might be a clue...if no condensation is coming out the Rear AC drain, but there is water on the rear floor?
  16. WalleyeMikeIII

    2022 Yukon 2nd/3rd Row Floor Wet...hasn't rained here in weeks.

    Could be the rear A/C drain...should be coming out under vehicle, passenger side, behind rear tire.
  17. WalleyeMikeIII

    New to 4WD, any info and advice appreciated

    Interior Lights...Hold down the map light for about 2 seconds, all lights turn on, do the same to turn it off...in the owners manual! The Stock Bridgstones are not good either, except perhaps their low rolling resistance helping your MPG's slightly.
  18. WalleyeMikeIII

    GM Serial Data Gateway Module and Radio N242435631 Service bulletin - 24 Yukon

    Sounds like your dealer is not very familiar w/ the update process...I have had my radio updated probably 4 or 5 times and never an issue.
  19. WalleyeMikeIII

    Rail Dust - Surface Corrosion

    Might consider taking it to a detailer for a clay bar and wax...might be cheaper than the body shop.
  20. WalleyeMikeIII

    New to 4WD, any info and advice appreciated

    What everyone else said, and the owners manual. Run it in 2Hi unless conditions worsen, then Auto. If you are on lose gravel, sand, dirt, mud, 4Hi or 4Low as appropriate. Only other thing I would say is Change the Transfer Case Fluid every 40-45k miles...there is only about 1.5 quarts in...
  21. WalleyeMikeIII

    Am I Burning Oil?

    Perhaps a bit more explanation is in order on how the systems in your vehicle works, hopefully this can help you. The "Oil Life Monitor" built into the vehicle and displayed on the dash displays remaining engine oil life, not quantity of oil remaining in the engine. - It monitors engine...
  22. WalleyeMikeIII

    DFM disabler released

    Never was deleted from SUV's, only the trucks.
  23. WalleyeMikeIII

    DFM disabler released

    This was only true of the full size trucks, all the SUV’s always had it.
  24. WalleyeMikeIII

    Discolored or faded cargo side panels

    Should be a warranty issue..
  25. WalleyeMikeIII

    AC smell when first turned on

    You can also have the dealer enable "afterblow," this is a setting in the BCM that will run the fan at some specified intervals after driving to assist in drying out the coils.

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