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  1. yukon702

    Easier install on a 5.3 a 4L80e or 6l80e?

    I have a 2007 Yukon with a 5.3 and a weak 4L60e. I've given it a band aid by putting in a shift kit because it was slipping. I know eventually I'll need to rebuild my transmission but I just don't want to stay with the 4l60. I'm going to install a whipple in the very near future and I want to...
  2. yukon702

    Has anyone ever installed a 4L80e in a 2007 or newer tahoe/yukon?

    Hey thank you very much! The guy is very detailed.
  3. yukon702

    Has anyone ever installed a 4L80e in a 2007 or newer tahoe/yukon?

    One more thing, my suv is a 2 wheel drive.
  4. yukon702

    Has anyone ever installed a 4L80e in a 2007 or newer tahoe/yukon?

    I would appreciate it. I have a 4L60e that's starting to slip and has almost 100k miles on it. I don't want to rebuild it nor do I want another 4L60. I'm on a budget. I wanted to get a 6l80e but it is more money and read it is real finiky with having to program it. If I'm wrong about this...
  5. yukon702

    Has anyone ever installed a 4L80e in a 2007 or newer tahoe/yukon?

    I'm just curious if anyone has installed a 4L80E into a 2007 on up in a tahoe/Yukon before? If so can you show me what site,link or any info will be greatly appreciated
  6. yukon702

    Black Bear tuning Question

    It's an suv that weighs over 3 tons. I personally think when you get a vehicle this big with no aerodynamics gas mileage is out the door. It's all about comfort and how much speed you can get out of it.
  7. yukon702

    Any difference between 3.73 and 3.90 gears?

    I have a basic 4l60e with a transgo shift kit and black bear tune. I live by mountains and we take trips up to the lake. The suv is great but lags on the pickup without me having to punch it. Right now I have 3.42 in the rear. Any advice about the difference between 3.73 and 3.90 will be...
  8. yukon702

    Regearing my xfe tahoe

    Would there be much of a difference between 3.73 and 3.90?
  9. yukon702

    tuner

    I've had black bear for over 3 years and no issues.
  10. yukon702

    Boost valve removal

    I installed everything and everything worked fine. FYI from 2007 and up all 4L60E transmissions have a speed sensor right in front of the boost valve. To change the boost valve you have to now remove the whole transmission.
  11. yukon702

    Boost valve removal

    Has anyone tried removing their boost valve with the tranny still in the suv? Please give actual answers and not why or I think or I guess. I'm in a bind and I really need to replace my boost valve but I can not fully get to it because their is electrical connection right on top of it. Does...
  12. yukon702

    Oil life

    Exactly
  13. yukon702

    Ughhh.. Voltage Issue 08' Yuk Denali..

    I'm having the exact same problem. I have an aftermarket stereo system with amplifiers in the back and the batteries up front in the engine compartment. Under load the voltage drops to almost 12 volts. It has to do with the grounding and the resistance of the batteries being so far away from...
  14. yukon702

    New GMC Yukon XL Owner in Utah

    I just purchsed the same wheels you have on your Yukon. I was wondering what size tires do you have on them?
  15. yukon702

    New alt and batt. Still have voltage drop

    Do the Big 3. If your amp is all the way in the back of your suv make sure you are using 0 gauge wiring for ground and for power. The further back the amp is away from the battery it creates resistance so if you have 4 gauge your amp could only be receiving way less juice. Thats why you use a...
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