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  1. ThisIsLivin

    How much extra power can one make without unwanted wear?

    I did the complete AFM removal with bushed rockers my own tune CAI and Gibson exhaust and according to the internal torque sensor, I’m making 464hp and 507ftlbs. I hit the go pedal pretty hard and I have over 214,000 miles and no problems. FYI if you do the AFM delete you can reduce the TC...
  2. ThisIsLivin

    looking for service manuals - 2016 GMC Yukon XL 6.2

    I would be ever so grateful for a copy of the GM service manual. I have spent a lot of time tuning my 2015 Denali with HPTuners. I have made great improvements in the transmission shifting and starting on engine tweaks. I have 93 octane here in Michigan so I have added a bit of timing to the...
  3. ThisIsLivin

    *Update: Engine Down* Cam/lifter upgrades?

    I made it to 176k before a non-DOD lifter failed. I had them replace all lifters valve springs, seals and rebuild rocker arms with bushings. You want to replace the oil pump as the stock pump is designed for DOD which requires more flow. I had them replace the cam with a non-DOD stock spec cam...
  4. ThisIsLivin

    2018 Tahoe premier flowmaster 40 exhaust

    I put a Gibson stainless 3.5" on my Denali and disabled AFM. With that combination the sound is great and minimal noise at speed. I didn't loose any mileage at all. I get 20mpg at 83mph and 22+ at 70mph. I bought it through Summit for $470 for everything Cat back with a sweet 4" chrome tip...
  5. ThisIsLivin

    Normal ticking???!!

    I bet when your all done it will still make the same ticking noise. Buy a mechanics stethoscope from Harbor Freight. You will find the ticking is from a lifter. Could be a lifter or rocker arm issue, but that ticking is definitely valve train.
  6. ThisIsLivin

    2016 Yukon XL Needs New Transmission - Not Happy

    Seems like the 8L90 is the gift that keeps giving. It appears now I am having issues with the valve body and now when it's been driven for awhile on the freeway it revs up between shifts. I changed the fluid not to long ago and haven't put more than 30k between changes. I think there is a...
  7. ThisIsLivin

    Ticking noise coming from engine

    I bought a mechanics stethoscope from Harbor Freight, great investment. You can pinpoint noises precisely. I happened to remote start my Yukon when I was standing in front of it and noticed a ticking. I have it narrowed it down to #2 cylinder. I have disabled AFM, but I'm afraid I may need...
  8. ThisIsLivin

    Fresh oil change and catch can info

    I am at 176,000 miles and have been running Amsoil oil and filters since my free oil changes from the dealer ran out. I put a catch can in about 100k ago. I run my oil 10k between changes. I only get about a tablespoon of condensate every 10k. My oil is getting pretty dark, but I don't see...
  9. ThisIsLivin

    How common do the master window switches break? - SOLVED

    Picked up Covid on a business trip so it will be awhile. Plus I started a major brake project on my 03 Suburban. I'm replacing everything from the booster on down.
  10. ThisIsLivin

    How common do the master window switches break? - SOLVED

    I just ordered a new wiring harness from GMPartsgiant. They give you the ability to verify that the part will work with your vehicle by VIN#. On top of they had a great price, harness was $120 including tax and shipping. If you have a 2015 the part number is 84305359.
  11. ThisIsLivin

    How common do the master window switches break? - SOLVED

    Did you ever figure out your problem? I now have the same thing. After doing some online research I'm leaning towards getting a new door harness.
  12. ThisIsLivin

    How common do the master window switches break? - SOLVED

  13. ThisIsLivin

    Driver door controls don't work for remote windows or mirrors

    My seat memory switch quit working so I took it to the dealer to run a diagnostic. I had a free service coupon so it didn't cost me anything. They said I had a broken wire in the harness. I pulled the harness apart and sure enough the wire was broken clean through. I fixed that and put...
  14. ThisIsLivin

    whats the best floor mats/liners on the market right now for 2021 Tahoe?

    If you looking for quality rug mats I recommend Lloyd's. I have a set of Lloyd's in my 03 Suburban and after 17 years they are still in great shape. They're not cheap but they are the best. I have GM all weather mats and didn't like them, so I bought Weather Tech. I agree the rear cargo mat...
  15. ThisIsLivin

    2021 Tahoe High Country/93 octane or not?

    If the knock sensors kick in, your fuel economy will suffer. It's really cheaper to run premium.
  16. ThisIsLivin

    Looking to cam my 03 tahoe

    You can get your heads CNC ported by Katech pretty inexpensively. If I were doing a cam swap the heads would definitely get ported.
  17. ThisIsLivin

    How to get 700hp (2017 Denali)

    I'm looking pretty hard at Pro-Charger, they typically get more horsepower because they are more efficient. I don't need any more low end torque, my tires don't hook now if I nail it. Also Katech has packages and they will do a CNC port for $400-500.
  18. ThisIsLivin

    Max Towing Thoughts on 2017 Yukon Denali 4x4

    The Sierra crew cab weighs maybe 500lbs less than my Yukon, so I could believe it if the tow rating were 500lbs different, but it's 3,000lbs less. If I get time I will measure the gauge of the frame of my brother's Sierra with the Max Tow package against my Yukon. Same thing with my 03...
  19. ThisIsLivin

    New member 2003 Z71 with brake issue

    I had the same thing happen over time on my 03 Suburban. I am sure it's either air in the ABS or the ABS itself. Mine has 360k on it and the lines are rusted so I am planning on a complete replacement of everything from the master cylinder out. I've already replaced the master cylinder twice...
  20. ThisIsLivin

    Max Towing Thoughts on 2017 Yukon Denali 4x4

    I checked and I have the same 9.76" axle and drive train as the GMC 1500 Max Tow rated at 11,000. My brother has the GMC Sierra 1500 Max Tow and it uses exactly the same brakes as my Yukon. The tongue weight on my trailer is probably close to 700lbs and it doesn't drop the hitch down more than...
  21. ThisIsLivin

    Max Towing Thoughts on 2017 Yukon Denali 4x4

    Help me understand, the drive train and brakes are the same between my Denali and the Max Tow Package pickup which is rated at 11,000lbs. I even have the same gear ratio in the differential. Yet the Yukon which also has the tow package is only rated for 8100lbs. I tow a 6500lb boat and...
  22. ThisIsLivin

    Will a 2”Level kit allow me to fit by 275/65/20 on 2015 Yukon XL

    Too bad you didn't get the 275/60R20 Goodyear Ultra-Terrains. I have those on my Yukon Denali with a leveling kit and they are tight but just make it.
  23. ThisIsLivin

    Would you buy your Yukon/Tahoe again?

    I should have lemon lawed mine and got the 2016. Lots of gremlins, the electronics suck. Temp control is garbage, collision detection goes off randomly, rain sensing wipers run with no rain and don't with rain, Instrument panel goes dark when passing under overpasses and stays dark for miles...
  24. ThisIsLivin

    Changing to a non computer controlled engine

    I'm all for old fashioned carburetor NA motors. But so much in you vehicle is driven of the ECM and engine feedback. You'll need to change out the fuel pump or at least come up with a ton of mods and regulator to make it work. I believe there is an extra bolt on the trans for the LS and without...
  25. ThisIsLivin

    How common do the master window switches break? - SOLVED

    I have a similar problem, my seat memory switches quit working. Swapped the switch and still didn't work. Took it to the dealer to run a diagnostic and 2 of the wires in the door harness are bad. They used cheap Chinese wire that wasn't properly annealed and it fractured. Now does anyone...

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