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  1. M

    ECU software

    Higher speed limiter, different shift tables ... What I still don't get is how GM won't sell that e-z-clean floor to the general public ...
  2. M

    2003 Tahoe 5.3 2WD Front End Rebuild Kit

    Ever Heard of MevoTech TTX (NOT MevoTech without the TTX)? I like Detroit Axle, when I can find them.
  3. M

    2006 Z71-For sale 70k miles

    70,000 miles / 2,200 hrs = 31.81MpH
  4. M

    slight engine resonance through steering wheel

    If it turns out to be the torque converter clutch, you get a torque converter upgrade, which would include a torque converter clutch upgrade. There are GM torque converters that are OE, but for heavier-duty applications; no need to go to the aftermarket. It involves separating the engine from...
  5. M

    slight engine resonance through steering wheel

    Vibration = shake. Before, you said when you accelerate through 1500-1700RpM. So, NOT when you're coasting or decelerating? Now my suspicion of the torque converter clutch & the ATF is getting stronger. I'd money I don't have that your engine has Cylinder Confusion. I'd be surprised if GM lets...
  6. M

    slight engine resonance through steering wheel

    2024 should not have Engine Half@$$, should have Cylinder Confusion, which varies between V8, V7, V6, V5, V4, V3, and V2 modes. I'd be very surprised if this feature's operation was made visible to the driver by GM, but I've been wrong before. Except for 1st gear, this makes me think ... torque...
  7. M

    2006 Z71-For sale 70k miles

    If the idle-ometer is not available, a very old-school substitute is to examine the right side of the brake pedal.
  8. M

    6l80 tcc slip tuning stock clutch

    Most 6L80 vehicles are personal transit appliances Towing / Hauling less weight less often compared to 6L90 vehicles which tend to be workhorses ... ?
  9. M

    2015 Yukon Denali - Engine Failure - Sell or Fix?

    You will NOT get back the parts-plus-labor costs of removing & replacing an engine unless you keep the vehicle and use the replacement engine. Sell outright as-is, mechanic's special.
  10. M

    6l80 tcc slip tuning stock clutch

    Is it a a safe guess that most 6L90s also work harder than most 6L80s? I'm GUESSING that if a 6L90 lived the gentler life of a 6L80, the 6L90 might tend to last longer than the 6L80? PLEASE, let me know if I'm guessing wrong here ... ?
  11. M

    02 Escalade V

    ... Supercharged 6.2L V8?
  12. M

    Plastic Engine Cover

    I want to see it. And I am nowhere near alone.
  13. M

    RPO codes

    Only place I know to get all your RPO codes for sure: compnine.com Problem is it ain't free. Maybe just go to a dealership?
  14. M

    AC doesn't blow cold air at idle

    But, since it is a FACT that we have the right to buy R134A and put it into our vehicles' AC compressors, the EPA is half@$$ing by NOT making it easier for DIYers to drain out old freon measure the proper amount of new freon
  15. M

    AC doesn't blow cold air at idle

    Besides sucking it out, measuring how much was sucked out, and jamming that much back in plus possibly a wee lil bit more, there MUST be an independent reference source for exactly how much to put in. Of course, this reference can still be misused, especially by idiots, but even by humans. My...
  16. M

    6l80 tcc slip tuning stock clutch

    The physical size difference is minimal. What's far more important: The 6L90 is built to withstand more torque and RpMs (some of that extra size is internally important, some of it is just case strength) GM OE 6L90 2500 tuning, not just TCC behavior, sacrifices a wee lil bit of NVH that your...
  17. M

    Second Tahoe for me

    Disabling Engine Half@$$ is step 1; if you can do it for $40, congrats. If you'd like it to run really nice for a very long time, best way to extend the 6L80E's life is to have the tcm tuned to minimize torque converter clutch slip. A bit more than $40, sure, but even a tcm tune without the ecm...
  18. M

    ECU software

    All Police Pursuit Vehicles are technically Special Service Vehicles, because neither are 'civilian'. Don't think the insurance racket cares to differentiate between PPV vs SSV; 'civilian or not' is enough for them. NOT all SSVs are PPVs though. Far more useful though to refer to them...
  19. M

    2002 Tahoe help needed to transport K9 service dog PPV

    Police Pursuit Tahoes are RWD, Special Service Tahoes are 4WD (none are front wheel drive). Both the 4L60E & the 6L80E each have their own issues, those actually deserve separate threads. Best things to do for ANY vehicle equipped with 6L80E (MYC) are as follows: 1. disable Engine Half@$$ ASAP...
  20. M

    Ruff riding tahoe

    Nothing to do with K9 units. Everything to do with PPVs: Police Pursuit Vehicles with Z56 suspension. Most of us already know that most Tahoe suspension & steering systems are NOT designed to chase other speeding vehicles; Tahoe PPVs being the glaring exception. Solution is to alter the PPV so...
  21. M

    cam upgrade question

    Nor am I. None of the following disagress either. If the oil pressure is under 1psi per 100RpM, especially under 2000RpM, and the engine either works or plays harder than mere personal transit, it should stop doing those things until the cause of the additional wear / lack of pressure is...
  22. M

    RPO codes

    Have you tried decoderpo.com?
  23. M

    2009 Yukon Denali AWD High Transmission Temps - SOLVED

    Rokjhn, if your vehicle lives and drives in a climate where cold winters are irrelevant, feel free to bypass the ATF preheater in the radiator.
  24. M

    cam upgrade question

    6psi @ 1000RpM = go find a replacement engine, quickly, not much time left 9psi @ 1000RpM = 18psi @ 2000RpM = really nervous 24psi @ 4000RpM = 12psi @ 2000 RpM = 6psi @ 1000RpM = go find a replacement engine, quickly, not much time left Anything under 1psi per 100RpM would make me very nervous.
  25. M

    6l80 tcc slip tuning stock clutch

    Indeed, especially when you consider that 6L90s work a helluva lot harder than 6L80s, and yet somehow last longer ...

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