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  1. SilverSport

    Transfer Case Fluid 2005 Yukon Denali...

    which one to buy???…I have seen so much conflicting information for the fluid to use in my 2005 Yukon Denali AWD transfer case. Owners manual lists Dexron lll H Valvoline lists blue bottle Dex/Merc covers Dexron lll (but doesn’t list the latest H version) Valvoline lists red bottle Maxlife...
  2. SilverSport

    Autoride Failed?...

    2005 GMC Yukon Denali with Z55 Autoride... rear of the truck seems like it is higher than it usually is but ride not too bad... I no longer hear the compressor when starting the vehicle (several weeks now) I see some tears in the fabric covering over the "airbag" portion of the shock absorber...
  3. SilverSport

    Happy New Year...2025

    ...wishing everyone a Safe, Happy and Healthy New Year...2025 Bill
  4. SilverSport

    Real Benefits to 91/93 Octane in a regular LQ4???

    anyone really seeing benefits to using 91/93 octane in their regular LQ4/6.0 V8??? I have not been one of those that believed higher octane on vehicles that don't recommend/require it got any benefits...I've owned vehicle that did recommend/require it and always used it in those vehicles but...
  5. SilverSport

    Spare Tire part of the safety system?...

    does anyone know if GM uses the spare tire on our GMT800s as part of the rear safety system???...by this I mean is the spare used to protect occupants at all in our vehicles???... I've recently replaced my 17" wheels and tires with those from a 2024 GMC Yukon Denali in the 20" sizes so my spare...
  6. SilverSport

    Running 20 inch wheels and tires...PSI

    I have a 2005 GMC Yukon Denali and recently switched from the OEM 17 inch wheels and tires to 2024 GMC 20 inch wheels and tires... When I ran the 17's I had tire PSI at 36 rather than the door placard recommendation of 30 PSI...now with the 20" wheels and tires I don't know the recommended...
  7. SilverSport

    Back Up - Reverse Lights...

    is it just me or are the reverse/back up lights on the 3 color taillights on my 2005 Yukon Denali weak... is going to an LED the only answer with using the stock taillights???...my housings are fine and do not appear faded or cloudy...when the white back up lights come on and I am outside the...
  8. SilverSport

    Interesting Discovery Under Hood Fuse Box...

    while running down a BO229 fault code on my 2005 GMC Denali I checked the under hood fuse panel (under the lid) and found what appeared to be a cup and a half or more of tiny bird seed/grass seed (tiny and black one side and light/white the other half) under the lid of that fuse panel/box...I...
  9. SilverSport

    Pinging at WOT...

    when on the highway driving at say 50 MPH then giving the 2005 Yukon Denali WOT I get a sound that sounds to me like pinging for a bit before stopping... I am the relatively new owner of this 2005 Yukon Denali 6.0...I am on my 3rd tankful in my ownership and the first tankful I used Mobil 87...
  10. SilverSport

    Battery replacement time?...

    interestingly to me...picked up this 2005 GMC Yukon Denali last week...starts just fine...got it home and placed on my Deltran Battery Tender and brought battery to full capacity...driving around the last few days and no issues starting or running anything. Today I decided to get a better...
  11. SilverSport

    Question on Wheels...17, 18 or 20s???

    hello...new here to the Forum but I've had a couple similar GM trucks in the past... My 2005 Yukon Denali has the OE 17" wheels and tires...the tires are brand new but are slightly lower profile than OE and appear to exaggerate the look in the wheel wells...plus my wheels are damaged from...
  12. SilverSport

    Ordered a front impact crash sensor...BO101 air bag

    I ordered a hopefully working front driver's side crash impact sensor causing my air bag light to illuminate... I disconnected my battery, waited a bit and then removed my driver's side front impact/crash sensor after getting the air bag light. a scan using my BlueDriver showed it was a BO101...
  13. SilverSport

    Any Advantage to a Suburban over a Tahoe/Yukon???...

    I've been looking and I see each...beyond the obvious extra size and third row of a Suburban are there any advantages in buying one or the other of the 1999 vintage?...5.7 L31s and equally outfitted (LT/SLT) Thanks for any help or experience you care to share... Bill
  14. SilverSport

    Loose front facia or by design?

    I looked at a 1999 GMC Suburban and the area around the yellow side parking lights and lower turn signals (the area under the head lights) was seemingly unconnected…it was the same on both sides but I’m wondering if it is supposed to be that way or has this truck had some front end work that’s...
  15. SilverSport

    New from the ChicagoLand Area...

    I'm looking at GMT400 possibly purchasing a Tahoe/Yukon/Suburban/Escalade...I had a 2000 Escalade from about 2007 to 2014 and I miss the feeling I had of go anywhere (I realize many current vehicle might do that too ;) )...seems like I can learn a lot on this Forum Look forward to my...

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