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  1. tagexpcom

    Transmission question.

    I tow a 5500lb 7 x 14 cargo trailer (camper) - about 20K miles now. I often forget to set tow mode when I first take off but then notice a bit of sluggishness plus a low sounding, drive train vibration (I imaging it's straining?) at 60mph. Tow mode clear this up (sluggishness and low...
  2. tagexpcom

    [SOLVED] Couldn't disable the Parking brake nor drive. Re-started ten minutes later, everything normal. Battery?

    Not sure this is what's happening, but I have to ask: How long did the rig/battery sit inbetween these events? Could the battery be running down overly-quickly? My own 2021 can only go 6 days before I need to trickle charge or drive.
  3. tagexpcom

    6.2 recall question?

    If you go to https://experience.gm.com/ and create and account, you can lookup you're VIN yourself - and see if you actually have a recall notice! You don't need to depend on a dealer. For example, my 2021 went in for the PICO test and passed and this is what my VIN shows right now...
  4. tagexpcom

    Navigation, Do I Need On Star or Plan?

    Agreed and that's (initially) why we went full OnStar - just to have more options as from the old days (2004), I was thinking they were still satellite and would work in remote (non cellular) areas. My question as well - but never got an answer. Agree with this - from the way it behaves, it...
  5. tagexpcom

    Navigation, Do I Need On Star or Plan?

    We've tried the OnStar + Wifi/data route - including navigation - with our 2021 Yukon. And perhaps in a solid metropolitan setting or latest GMC models it's better, but for us, we go places such as the hi dessert (Southern Oregon, Northern Nevada) and the only way we've found to navigate via...
  6. tagexpcom

    Navigation, Do I Need On Star or Plan?

    Yes, apple car play shows you're iPhone on the entire screen. You can select Google Maps, Saved Places, etc for navigation - and get 'live' traffic updates and re-routing suggestions thru this method. It also does voice etc. We tend to use this instead of GMC navigation as it has a greater...
  7. tagexpcom

    Navigation, Do I Need On Star or Plan?

    We did OnStar mainly for the 'car WiFi' with data plan - thinking we could do high-speed youtubes etc while driving and have remote access when camping but... it's problematic/doesn't work a lot of the time and not at all in most remote areas - e.g. overall it's disappointing. We'll be...
  8. tagexpcom

    Navigation, Do I Need On Star or Plan?

    My 2021 Yukon Denali does not need OnStar for the navigation to work. Neither does our 2011 Cadillac CTS. We bought our used in Aug 2023 and navigation worked normally. Later we added OnStar but haven't noticed any improvements. There may be some advantages? but we haven't discovered any...
  9. tagexpcom

    BREAKING: GM is officially recalling the L87

    Ran across this youtube, talking about a list of dubious engines. #3 is the 6.2L L87 - old news here. However at 12:34 into the youtube it calls out years 2019 and 2020 as having issues which is outside the 2021-2024 recall window. I know everyone is watching 2025... but wondering if...
  10. tagexpcom

    2021 Yukon Denali/6.2L - Towing 6000lb trailer - 226F Trans in stop/go - OK or Design Flaw?

    Yes, 235F - thank you - corrected my post.
  11. tagexpcom

    2021 Yukon Denali/6.2L - Towing 6000lb trailer - 226F Trans in stop/go - OK or Design Flaw?

    Hey Folks - just got back from a Southern CA camping trip towing our 6,000lb cargo trailer -> camper. The 2021 Yukon is 'regular' / does not have the tow package. We got caught in a 38minute delay stop/go backup on I-5 north on the way home - maybe the 'grapevine' but somewhere in that area...
  12. tagexpcom

    Lost the 6.2 (was: May have Lost the 6.2)

    In the US, common trailer tires are not rated for 90mph+ is my understanding. This is from -https://tirecrunch.com/trailer-tires-speed-rating/ I do "L" with 75mph top speed so I can cruise at 70'ish on interstates - but it costs extra. The M/N (81/87mph) tires are even more expensive and I...
  13. tagexpcom

    BREAKING: GM is officially recalling the L87

    I installed the Autostop Eliminator (love it) in my 2021 Yukon but does it also risk interfering with updates/programming? - or does it's limited functionality make it a non-issue. Thought about the Range module ever since they came out with 2021 compatibility but these comments about removing...
  14. tagexpcom

    2021 Yukon Denali - How best and when to use 4wd low / how does it work

    15yrs ago, I moved from very-large city to this rural area with a city car and a white poodle (and no trailer). Around here, it's all about the size of the rig, the trailer, and the guard dog (and quantities of each). The Yukon is not a truck but at least its 'big' and can tow 7500lbs, I...
  15. tagexpcom

    2021 Yukon Denali - How best and when to use 4wd low / how does it work

    To recap one aspect that's becoming clearer to me.... 4lo gives significantly more torque to the wheels compared to 4hi with the trade-off of lower speeds. And one reason for this extra torque that under steep enough conditions (for example) 4hi (the rig) doesn't have enough torque to move...
  16. tagexpcom

    2021 Yukon Denali - How best and when to use 4wd low / how does it work

    This was really helpful - it gives me some idea of what's happening and why one needs to be idle/stopped for 4lo but not for 4hi. Also, I appreciate the idea of just trying 4lo for short distance on pavement to see how it operates - Duh to me!
  17. tagexpcom

    2021 Yukon Denali - How best and when to use 4wd low / how does it work

    I hit 4lo button with rig idling and still - there was not lurch or noise at that point. When I gave it a bit of gas I got the spin/clunk - e.g. I was imagining the spinning wheel caused the 4lo to kick in - e.g. the clunk. But may I wasn't properly in 4lo? This is what I'm trying to...
  18. tagexpcom

    2021 Yukon Denali - How best and when to use 4wd low / how does it work

    As far as driving forward - yes. My question is not so much traction but how the 4wd lo works. I was surprised that 4wd lo failed to help me move forward whereas the 4wd hi worked smoothly. I was stuck due to left rear spinning in 2wd. Backed up a bit but when it hit the same spot, the left...
  19. tagexpcom

    2021 Yukon Denali - How best and when to use 4wd low / how does it work

    Hey Folks I've had my 2021 Yukon Denali 2+ years now and have tried 4wd low twice - both with unexpected/not-useful results. This also generated a few comments but it's clear I don't understand how it works. I'm coming from Cadillac SRX 2004 with AWD - it just works all the time. I'm...
  20. tagexpcom

    Do you ever use the driving modes on your Yukon?....Sport, Off-Road..

    2021 Yukon Denali - magneride only. Tow-mode - I use this to pull our 5500lb camp trailer and we're in very mountainous region. 2 things... 1) The rig doesn't 'groan' like it does in normal-mode but rather accelerates/pulls/cruises more smoothly and 2) really like the automatic downhill...
  21. tagexpcom

    2023 Denali - looking to buy - what should I watch for at 42k miles?

    Yep, that's what I'm finding out. I pull a 5500lb trailer over my front lawn out to the street. I have a 'grass driveway' with 9" stone and those plastic grids with 1-2" dirt/grass on top. Slight uphill to the street. Normally I just 2WD over the grass to the street but due to tons of...
  22. tagexpcom

    2023 Denali - looking to buy - what should I watch for at 42k miles?

    I bought a used 2021 Yukon Denali in 2023 with 49K - were're up to 67K now and recall 'passed' / no trouble with engine. As far as what to watch for.... I was overwhelmed with the number of features! compared to my 2004 SRX. It took several hours to just understand the list. And now...
  23. tagexpcom

    2024 Tahoe Tire Recommendation

    My 2021 Yukon Denali came with NT420V(s) - https://www.nittotire.com/suv-cuv-tires/nt420v-luxury-truck-suv-tire/ - 20,000miles ago when I bought the rig used. Not a Yukon/Tire expert but have driven a lot in my life and these have performed as well as any for 'regular road' tires. Have...
  24. tagexpcom

    Why have more than one SUV?

    We camp / pull a trailer. I keep my old SUV as an emergency backup tow vehicle after the debacle we had with AAA who refused to give us service because we had a trailer - even though we paid top $ that was supposed to include trailer service. Getting tow service when you have a trailer...
  25. tagexpcom

    Low battery / FOB-electronics not working - How to open tailgate manually for unload/jumper cable access?

    Bottom line for me: Have moved the jumper cables from the back to under the front seat for access! and put a wrench in glove box so I can unscrew the battery negative to be able reset the electronics. :) Appreciate the discussion/responses - thank you.

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