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  1. sealandsky

    Need Engine Troubleshooting Help!

    Hello brain trust - Today I decided to perform my twice per year top engine cleaning. I disconnect the battery, replace the air filter, clean the MAF, remove and clean the throttle body and then spray a can of CRC turbo and valve cleaner through the engine. I got to the part of reconnecting the...
  2. sealandsky

    Reduced Power Mode

    Hi brain trust - I has a strange thing happen to me a few hours ago... I had an opportunity to pass a slow car in front of me and being a short lived opportunity I mashed the pedal to the floor. Just as I was abreast of the car I was passing, I had a dramatic reduction in power to the point that...
  3. sealandsky

    Old Rubber Off - New Rubber On

    Well folks, I finally bit the bullet and swapped out my OEM Bridgestone Alenza M&S's for the Michelin Premier LTX's. I understand that the Bridgestone's tread was worn almost down to the wear-bars, but holey smokes - What a difference in ride smoothness and noise! I feel that the Bridgestone...
  4. sealandsky

    Switch on accellerator assembly

    While performing a detailed vacuuming on the floor of my 2019 Yukon Denali I discovered that there is some sort of momentary switch that is "clicked" just shy of full pedal travel. It does have an audible click when pressed. The problem is that with my Weathertech 3D floor mat installed, the...
  5. sealandsky

    Lock'er Down is SLICK!

    Hey everyone - I just completed the installation of the Lock'er Down vehicle safe and wanted to give "props" to the great team at Lock'er Down! It took me more time to gather my flashlight and socket set than to actually install the unit in my 2019 Yukon Denali. The installation is a "glove fit"...
  6. sealandsky

    The Power of Your ECM and Engine Sensors

    A few weeks ago I posted about how my 2019 Yukon SC560 had rough and jerky low speed response, so I cleaned the MAF and Throttle Body (see post titled "Big Jerk"). My low speed drive-ability improved quite a bit, but my high end was a bit "off" from where it should have been. After seeing the...
  7. sealandsky

    Catch Can

    Following up on my post "Big Jerk" I'd like to get input as to what the best Catch Can is for my 6.2 boosted Yukon? Anybody out there using them? Good, bad or indifferent?
  8. sealandsky

    GMC Black

    Made the switch and I gotta say that I think it really improved the aesthetics!
  9. sealandsky

    Big Jerk

    I'd like to tap in to the brain trust's vast pool of experience so I can lead my GMC dealer in the right direction (they can't lead themselves anywhere). Vehicle: 2019 Yukon Denali - Callaway Weather Conditions: Ambient temperature 20-50 degrees F Vehicle Conditions: Not first run of the day...
  10. sealandsky

    Yukon Denali Hood Vent

    Has anyone installed functional hood vents (louvers, NACA, etc) on a Tahoe, Denali, Esky? My goal is to try to reduce under-hood temperatures. However, I want them to blend in and don't want it to look stupid. I like the louvers that are on the Camaro SS.
  11. sealandsky

    Black GMC Emblem Part #'s?

    Does anyone have the resources to find the part numbers for the new black front and rear GMC emblem's?
  12. sealandsky

    Anyone capable of looking up TSB?

    Hi all - I'm trying to pull up the details of GM Technical Service Bulletin PIT5665 and it appears that GM shields the details of the TSB from the web. Anyone on this forum have the capability of looking this up? It also has a NHTSA# 10156932 if that helps.
  13. sealandsky

    TCM Mod for GM 10 Speed

    Has anyone heard of a modified TCM for the GM 10 speed transmission? I'm driving a 2019 Yukon Denali and while the 10 speed up-shifts crisply and other wise works well - It's always trying to achieve about 1,500 RPM. I'd like to modify the shift points if possible, or find something "canned"...
  14. sealandsky

    Yukon Denali 3rd Row Seat Removal

    Has anyone removed their 3rd row seat from late model Yukon or Tahoe? If so, please detail what was involved and if any new parts were necessary.

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