Recent content by SuperOldSchool

  1. SuperOldSchool

    Fluid Replacement - Good PM Practice or Waste of $$

    I do brake flushes every 1-2 years. Trans fluid should be every 30k with the 6,8,10 speeds (my opinion). See my changes fluid below: https://www.tahoeyukonforum.com/threads/changed-my-filter-and-fluid-on-8l90-8-speed-today.126362/
  2. SuperOldSchool

    Changed my filter and fluid on 8l90 8 speed today

    OP again, another refresh at 155k miles - about 25k on fluid. Just did two extract and refills - 6 quarts each time, then level check. No pan drop with filter change. I took a quick few minute ride between drain/fill #1 to fully circulate the fluid. First extract was definitely darker than...
  3. SuperOldSchool

    What is the quarts "range" on the dipstick on these trucks?

    No I do it when I’m short … 153k mi on my l86 and no issue. Also I run 5w30 in summers
  4. SuperOldSchool

    What is the quarts "range" on the dipstick on these trucks?

    I do exact same thing - 9qts
  5. SuperOldSchool

    2017 Tahoe Low Milage Maintenance Recommendations

    You’re on the severe schedule - short trips. Change: Both diffs oil Transfer case Trans fluid Brake system flush I’d do coolant too - that’s just me/ my thought Grease zerks on front suspension- only 2 Run a dose of Techron thru tank before oil change
  6. SuperOldSchool

    Changed my filter and fluid on 8l90 8 speed today

    It runs about 50-60 degrees cooler than it used to.
  7. SuperOldSchool

    '21 Tahoe Z71 Transmission Failure

    Is it now fixed!?
  8. SuperOldSchool

    2015 Yukon Denali - Cleaned throttle body today

    Glad you saw results. I didn’t at all.
  9. SuperOldSchool

    Changed my filter and fluid on 8l90 8 speed today

    Yes, reuse it.
  10. SuperOldSchool

    2015 Yukon Denali - Cleaned throttle body today

    Throttle body cleaner. Avoid getting it into the pivot pins of butterfly. Move the butterfly very slowly and gently . Have fun!
  11. SuperOldSchool

    2015 Yukon Denali - Cleaned throttle body today

    Hello all, Sharing some pics of cleaning my throttle body at 140k. I have never cleaned it before(on this truck) and was a bit apprehensive after reading so many say they had issues after doing so - high idle/ unable to get it to relearn…..I had no issues. I bought a new TB gasket, and went...
  12. SuperOldSchool

    2015 Yukon Denali replacement brake parts recommendations

    Another vote for PowerStop Z36 kit. Have them on my 2015 and they are great. OEM kept warping for me. These have not.
  13. SuperOldSchool

    2015 Yukon SLT - Sunroof No Power

    I had this same nonsense going on. I noticed some burnt residue by the sunroof switch too. I ordered a new switch. Number 8 fuse on driver side still blowing out. It would work until I opened the console. I popped the console lid inner cover off and also removed the console rear panel...
  14. SuperOldSchool

    Most miles with stock AFM system?

    2015 Yukon Denali stock @ 138k miles. Had a lifter replaced at 72k.
  15. SuperOldSchool

    Don’t forget to flush your brake system - 3yrs or 45k

    I tow and I do brake aggressively, so brakes running hot.
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