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    GM Corporate Escalation?

    Regarding GM escalation I have a 2022 Denali XL diesel, open issue since January 4th, waiting on a fix needed from GMC (dealer isn't the wait). The truck has been back and forth multiple times, absolutely pathetic response from GMC. (this isn't out of stock parts, this is corporate GMC not...
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    Yukon Denali Trailer Package - Can I still tow without it?

    The hard bits that will matter (radiator and transmission cooler) are the components I would check to see if they are different. (if its a diesel they don't change with or without max tow package, dunno on the gaser) If you don't have them you can add them pretty easily. The brake controller...
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    tracked tahoe

    I'm very happy with ATT's, I've had a few sets and they have held up very well. That company is great to work with, I've only had positive experiences. I've seen some pretty nasty swamps without bottom, not sure if these would float across the top or sink like a stone in your area. If your on...
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    Anybody else get the 20s on their Denali?

    On the wife's denali we ordered it in then swapped to the GMC 20's and went BF AT KO's (couldn't get the KO's in 22 that we wanted). Didn't go aftermarket rim as we've had some issues with corrosion (we are on the ND/MN line) with previous rim sets.
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    2022 Tahoe vs 2023 Sequoia

    Does the new Sequoia have 'auto' four wheel drive as a diff choice? Without the open diff front to rear as an option it's a non starter for us (we seem to have 6 months of ice on the roads). Sister in law has a couple year old Sequoia, it can't shift in 4wd at speed and no 'auto' choice.
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    Suburban LS base model diesel

    I consider the Grand Wagoneer in the same size class as the yukon's as it is sized between them.
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    Suburban LS base model diesel

    Wife got a Denali XL with the baby Dmax, I did a review of it here: https://www.tahoeyukonforum.com/threads/2021-denali-dmax-5k-mile-driving-review-comparing-with-ecodiesel.130478/#post-1641799 Wife is very happy with her new Denali (she likes the GM large suv's). I personally have been let...
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    noob diesel questions

    I'd add in the following (we have a pair of the baby diesels, one Ram one GMC and we live where it gets cold, it was -28F ambient this morning). Don't use additives, 99% of folks will cause more harm then good; buy from high volume places and use winter fuel in the winter. Winter starts; aside...
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    D max and tire size??

    Appears their are calibrators available and if it's 'Global B' it can use gps intel to change. See this thread: https://www.gm-trucks.com/forums/topic/241698-speedometer-calibration-with-larger-tires/ But... .5 inch is a pretty small amount you may want to see what the actual difference is.
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    I think I have decided, going with a tahoe for an off-road/overland build

    I haven't built an overland'er but I've built a pile of jeeps on tracks and now a tahoe with tracks link. My thoughts - lift as little as you need, target factory geometry, a bad lift on the highway is miserable and worse offroad - tahoe's are heavy, they are heavier on the trail - lockers...
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    Hi I am new to this form I have a 2001 Chevy Tahoe with a 5.3 would like to be able to increase the fuel mileage

    Lack of power / mileage can be caused by a single issue or a pile of little issues. I'd start the hunt in this order - check engine light? any saved codes? - verify fuel pressure is within spec - tires (are they under inflated / are they significantly heavier or larger within a gearing change)...
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    Least problems? 18+ with 5.3 or 6.2?

    Reliability isn't really different between the models in question, other then the trans they are basically the same (tweaks along the way on the newer versions). You'll be getting fewer miles but likely no better/worse reliability until 2021+ where the lifter issues raise they ugly head...
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    dmax 3.0 and the cold (-30F)

    Concerning the console heat issue, per the dealer once GM got back to the tech (the tech created a case with them) GM provided instructions for the tech to follow. Sounded like GM is aware of the problem and it isn't specific to diesel versions. The truck hasn't been back to the dealer as we...
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    tracked tahoe

    Yep, they are the factory z71 boards, I removed the plastic filler pieces which were right next to the wheel wells (needed the clearance for the tracks), that is why they look a bit different.
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    tracked tahoe

    Posting a pic of the latest track build I've completed (used to build tracked jeep xj's, first tahoe). Stumbled upon this site looking for intel on the wife's baby dmax, figured this group would get a kick out of the tracked tahoe. It's a 2007, ltz with a 3.5 inch lift and some ATT's instead of...
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    dmax 3.0 and the cold (-30F)

    Update... The exhaust regen issue is due to a bad 'pressure valve' within the exhaust system, part has been ordered (FYI, for other diesel owners GM has an open bulletin for this) The center console issue per GM is a problem with the 'auto' hvac capability, not diesel specific, more so a denali...
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    dmax 3.0 and the cold (-30F)

    update Wife took the truck to the local dealer; the following is what they told her: - Exhaust smell: GM has a bulletin out, the back pressure valve failed its test. New part ordered, no eta on its arrival - Cold console: Dealer doesn't know how to fix it, opened a case with GM, no response...
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    2021 Denali DMax, 5k mile driving review comparing with ecoDiesel

    Wife's dmax has 7200 miles on it, at new it was full of def, I have added 2 of the 2.5 gallon jugs. It is 2 bars down from full. Zero towing, greater then 1/2 the miles have been large road trips (> 500 miles). I'd guess 5.5 gallons of def to 7200 miles.
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    Duramax smell

    Does anyone know if the dmax has any published intel regarding bio diesel usage? Asking as in the ram ecoDiesel usage of bio diesel (above a certain percentage, I think it was 10% but I could be mistaken) flips you into a different maintenance schedule (basically sooner oil changes and fuel...
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    Duramax smell

    This diesel engine will do a 'regen' activity which is when it cleans the 'diesel particulate filter'. The process for cleaning the filter is to get the exhaust hot and inject 'diesel exhaust fluid' (def) into the process to clean the filter. When this is occurring the tone of the exhaust will...
  21. S

    dmax 3.0 and the cold (-30F)

    Wife's dmax 3.0 has 7k miles on it, first time out in cold temps, 500 mile trip in -20F to -30F (ambient not Windchill). Are others seeing these issues? - The center console is cold, like really really cold (water freezes and a phone on the wireless charging plate will stop charging and throw a...
  22. S

    Will 5.3 to 6.0 (LQ4) make a big difference in towing?

    I've owned a few 5.3's and 6.0's towed many loads around the 6k lb size (boats / rv's / jeeps). I don't know how much of a difference you'll get out of just an engine swap. On paper the 6.0 is better but not significantly better, say 15% improvement (saying this with the thinking that at...
  23. S

    2021 Yukon XL At4 Dead before leaving Dealer Lot

    truck doesn't start, evoke threat of lawsuit... sounds like a true Karen in the wild
  24. S

    2021's not shipping because of hail damage.

    The tracking issue is that the current capability is sooo bad it makes it worse then no tracking ability as people / dealers fill in the blanks with bad intel. GM definately wasn't trying to pass along damaged vehicles as new, more so they are probably trying to figure out what's what and the...
  25. S

    Yukon Denali Duramax - Is it slow?

    Here is my mini review which includes a con concerning the high speed perf: https://www.tahoeyukonforum.com/threads/2021-denali-dmax-5k-mile-driving-review-comparing-with-ecodiesel.130478/#post-1628416 Against the above question. The dmax isn't the same as the GM 6.2's or any of the other big...

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