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  1. Geotrash

    GM to stop sharing data with LexisNexis and insurers

    Just read about this for the first time. https://www.gm-trucks.com/in-stunning-reversal-gm-stops-sharing-vehicle-driving-data-with-brokers/
  2. Geotrash

    Sealing up the oil cooler block-off plate once and for all?

    Hi All, I have tried 2 different gasket designs now, installed correctly per the manufacturer's instructions, torqued properly, and cannot get the oil cooler block-off plate to quit leaking on my '07. It's driving me crazy and it's getting worse as it's blowing back and dripping off the front...
  3. Geotrash

    Budgeting for a paint job

    Hi All, the paint on our 07 Yukon XL Denali is currently in excellent shape, with great gloss and no sun damage. That said, it's starting to chip and flake more easily and my touchups are becoming more frequent accordingly. I fear that the time is coming when it will need a complete repaint in...
  4. Geotrash

    Continental Terrain Contact H/T?

    Hi all. Time for new tires on the 2012 tow rig. 275/55/20. I’ve been a loyal Michelin buyer for years, but I see that discount tire has the Continental Terrain Contact H/T which has a similar tread pattern and treadwear numbers to the Michelin Defender LTX but they sell it in an XL load range...
  5. Geotrash

    AC belt keeps popping off

    Here’s a good one for y’all. Earlier this winter while we were up skiing at Snowshoe, I noticed that my AC belt on my 2007 had jumped off and was just hanging from the crank pulley. Over the past year, I had noticed some pretty harsh engagements of the AC compressor up to when it threw the belt...
  6. Geotrash

    Good news: GM is developing a new Gen VI small block V8

    https://www.caranddriver.com/news/a42622028/gm-gen-vi-small-block-v8-engine/ Hopefully they'll figure out a better way to save fuel than DFM this time. It's good news because despite their marketing about the future being all electric, at least someone there realizes that for a huge portion of...
  7. Geotrash

    New steering rack in my future

    Last week I noticed a few drips of power steering fluid hanging from the drivers side bellows that cover the inner tie rod. I wiped them away hoping they wouldn't come back, but they did. At this point it's not leaking enough to drop the power steering fluid level significantly, but that time...
  8. Geotrash

    Intermittent power driver’s seat

    Hi all, I’m having a problem with our 2007… Actually this problem has been there as long as I’ve owned it, but it comes and goes. Sometimes when my wife gets into it and tries to move the seat forward, it won’t function. There is no relay click and no motor response. If she waits a few minutes...
  9. Geotrash

    The financial benefits of maintaining our own cars

    I posted this originally at the tail end of another unrelated thread, and realized that it probably should be a topic of its own under General Discussion. I'm also curious about how y'all think about this as fellow DIY-ers. What I think: The willingness to drive an older car, along with the...
  10. Geotrash

    Christmas list ideas

    It’s that time of year again when my favorite people in my life are looking for ideas for things to get me for Christmas. I have a Tech2, and some other specialty tools for these things, but I’m curious if you guys have anything in your shops that you would consider especially useful or unique...
  11. Geotrash

    Cam Motion Stage 2 cam for 6.2?

    It's hard to find info including dyno numbers on the Cam Motion Stage 2 cam designed specifically for the 6.2L truck engines. Anyone have any experience with them or thoughts on which version to roll with? I ordered the low lift version but still have a little time before they start the...
  12. Geotrash

    Coolant reservoir cap broke

    Just tried to remove the coolant reservoir cap to add a little coolant and it broke. Anyone know how to remove the rest of it from the top of the reservoir? I managed to remove the seal and pressure spring but can’t get the rest of it out.
  13. Geotrash

    Good reason to run a 6.2 on premium fuel

    Ran across this video while sitting on a Boeing 737, flying home from a work trip for the first time in more than a year. Anyway, the guy does a teardown on a an auction-acquired 6.2 L92, and makes several comments about it that I did not know. Namely, that these engines apparently frequently...
  14. Geotrash

    Keeping coolant and transmission temps under control when towing in the summer heat

    Hi All, the 2012 XL Denali is a towing beast, but after the cam upgrade, new HD torque converter, and adding the Tru-Cool 40K in front of the radiator, the engine itself is running warm now that we're getting into spring. Hauled our 6500 lb camper down to Virginia Beach this weekend in 83º...
  15. Geotrash

    Torque converter - replace or let it be?

    As some of you may be aware, I’m on a mission to make our 2012 Yukon xl Denali a reliable towing rig for the long haul. Next on my list of obsessions is the transmission - specifically the torque converter since they have a tendency to let loose and take the transmission with them (6L80). We...
  16. Geotrash

    Transfer case play - is this normal

    Hi All, I pulled our 2007 XL Denali into the garage yesterday to install a Tru-Cool transmission cooler and perform some other maintenance as well, to get it ready for the spring/summer towing season. While I was at it, I did a thorough check underneath and noticed that I have quite a bit of...
  17. Geotrash

    Strange rear air shock behavior.

    No sooner did I replace the rear air shocks on my 2012 Denali, and the rear air shocks on my 2007 Denali started acting up. Specifically, when hauling a trailer (400 lb tongue weight), the suspension airs up just fine when I connect the trailer, and will kick on as I drive to keep the...
  18. Geotrash

    2012 Yukon XL Denali 6.2L Cam Swap Thread

    Thanks to all who helped on the other thread that started with choosing valve springs and finished with me deciding to do a whole cam swap. I'll use this thread to document the process for others to reference, share what I learn, and gather feedback. For starters, here is the parts list...
  19. Geotrash

    New Z55 autoride rear shocks - caution note

    Over the weekend I installed new rear OEM shocks on our 2012 Denali because the left side was leaking hydraulic fluid pretty badly. Installation of the new ones was a breeze, with one caveat: one of the airbags rolled over on itself, even though I let the truck down gently, preventing the airbag...
  20. Geotrash

    Best valve springs?

    I'm in the fortunate position of having both of our Denali's here in Richmond, VA for a few months (normally we leave one in Colorado for when we're there every month, but with COVID we're not flying back and forth). So I'm going to take this opportunity to do some heavy-ish maintenance work to...
  21. Geotrash

    Engine hours reset?

    Some chatter on another thread about engine hours got me thinking so I went out and checked the hours on both of our Denali‘s. The 2007 has 205,000 miles on it, but only 1,531 engine hours on the meter. Is it possible (likely?) that someone put a new engine in and reset the engine meter before...

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