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  1. M

    Sunsong Brake Hoses?

    Sunsong bought out one of the OEM suppliers in Ohio which became Sunsong USA, so you will see their name printed on AC Delco parts. But just because their USA manufacturing is rebranded, doesn't necessarily mean they are the same part. For their China manufactured parts, their hose and...
  2. M

    Replacing torque converter without a lift and using floor jack/trans jack, what is needed?

    Replacing the torque converter on the ground is doable with a good low profile hydraulic transmission jack that can tilt. The hardest part for me was moving the trans in/out from between the frame rails and off/on the jack, so just moving back a short distance out and back is much better. Some...
  3. M

    Any Experiences with The LuK TorCon TC0017 Torque Converter?

    That is a good data point to show that the Luk is calibrated to work with the stock programming. Presumably the dual clutch can dissipate the friction and heat across more surface area to greatly improve the operational lifetime.
  4. M

    Any Experiences with The LuK TorCon TC0017 Torque Converter?

    Yes, TCC lockup (even with slip) is a lot less heat than no lock. In the mountains on some tight curves I saw over 200 really quickly in the lower gears with no lockup. 4th is the weakest clutch vs 5&6, so I chose to only lockup 5&6, but that has a definite negative when it comes to running...
  5. M

    Transmission Rebuilders

    I would start with protransplus.com in Peyton and ask them if they will do the Sonnax upgrades. You can also try Tom at transmissionclinic.com. If you want the upgrades and the future proofing, you will have to go to shop that will provide that service and you may need to open your window to a...
  6. M

    AL-KO Extreme 4" lift front struts

    These are made in Germany, heavy duty shocks for the 1/2 ton Tahoe/Suburban/Yukon front struts with a 4" lift. They are on closeout at Rock Auto for $17 each. They look to be good quality and the billet aluminum lower spring mount is nice. Not as nice as Bilstein, but not too far behind, and...
  7. M

    Aftermarket weatherstripping / Door seals

    I went with PRECISION DWB111007 for the front doors. The quality is equal to OEM in my opinion. They are a little long, so you can trim to fit.
  8. M

    2011 Denali front diff mount issue - SOLVED

    At 225K miles, my 2011 started the front diff cluck as well. I just replaced the mounts and was surprised that only one of the four bushing was damaged (drivers front). That is a lot of clunk for such a small bushing that was partially torn but the rubber was still intact. Even the decel 2-1...
  9. M

    Front differential mounts

    Thanks for the recommendation on the Moog mounts. More of their China parts are decreasing in quality, but these seemed pretty good. I considered pressing new bushings into the factory mounts (since I live in the no salt zone), but that would probably been an epic mistake to save $35.
  10. M

    Projector headlight conversions for Yukon

    Agreed, but you can hide the bugeye with black paint if you are adding projectors, and the large bugeye means you can run any choice of universal projector and still have room for any shroud. If you like chrome bugeye, even better I guess, because you can just add a projector and be done.
  11. M

    Projector headlight conversions for Yukon

    I wanted to customize my own headlights with the Morimoto projectors, but ultimately decided on the XB prefab. With the additional LED switchback turn signal bulbs, they are second to none. I have had them over a year now and they are awesome, possibly the best upgrade I have done. I was a...
  12. M

    Vehicle will not run Evap Monitor

    The readiness code for EVAP and others is not just a single test. In many cases it will only run a certain test under certain conditions. In other cases, it is always 'testing' but only certain testing counts towards completeness for the monitor. One of the worst things about some of the...
  13. M

    TCC line pressure (vs load) causes TCC slip

    I haven't had any issues at all with the TCC since it has broken in finally. It just works wonderfully. Either mine took over 3K miles to burnish in properly, or I possibly had a poor early break-in causing the slip-catch-slip-catch shudder. I had actually had though of reducing the min...
  14. M

    Rock Auto Discount Codes - Post 'em Here for Others to Use

    300031510268721968 May 30
  15. M

    Any Experiences with The LuK TorCon TC0017 Torque Converter?

    The only downsides I could see are that it may have a slightly higher stall speed, because of the smaller case. Aside from that, the LUK is better in every way on paper vs a reman, even with the forged cover.
  16. M

    Any Experiences with The LuK TorCon TC0017 Torque Converter?

    slip capable material is difficult to achieve with longevity, so they generally all have good characteristics, including good static friction. I don't know of any good slippable clutch material that doesn't work well with programmed zero slip. Given that the clutch is multiplate and rated for...
  17. M

    Any Experiences with The LuK TorCon TC0017 Torque Converter?

    The LUK Torcon 6l80 converter is based on the smaller body from the 2015+ 4.8L with a welded plate, but uses a multi-plate clutch for longevity. LUK is a long time OEM quality supplier for GM. This might be the best stock replacement for the 4.8L/5.3L. All new parts, precision assembly and a...
  18. M

    2011 Yukon XL Transmission Slip

    280 km is a good run especially for 14 years of use. Most of the short term bandaid options are gone once you reach the point of heavy slip. It is very common to have apply issues on the 4-5-6 clutch (because it is small) and the 3-5-R, so that can be related to the excessive slip in 3/4...
  19. M

    2011 Yukon XL Transmission Slip

    Familyman, that is indeed unfortunate. Getting metal shavings in the fluid at only 2 years/20K miles is a pretty catastrophic sign along with the major slipping. The heavy shavings at such low miles is likely from the TCC clutch failing, but regardless those heavy shavings tend to damage the...
  20. M

    Tpms part number

    I did pull down a copy of the 12 owners manual and it does indeed say to use the trigger tool for the relearn procedure. I recommend the tool also, because it is safer and faster. However, all the trigger tool does is to trigger the sensor to send the pressure status which can also be...
  21. M

    Replacing torque converter - with what?

    The Sonnax woven carbon friction with the billet front cover plate will give a longer live and perform like OEM. I would have no issue with a torque converter rebuild with that clutch, especially for a stock replacement. Sonnax also sells the Borg-Warner high energy frictions as well, which...
  22. M

    Tpms part number

    The sensors are all 315Mhz for 2007-2014 (and 2015-2020) in the US. There are several types of aftermarket sensors: 1. OEM equivalent (like the Schrader 21507). These work just like OEM sensors. 2. OEM equivalent with cloning capability These work like OEM, but the sensor ID can be...
  23. M

    6L80 Help Needed!!!!

    The transmission pump is an offset vane drive pump just like the power steering pump, so similar sounds for problems would be expected, although I have never heard a whining 6L80 transmission pump. As Nick pointed out, the engagement for forward movement requires pressure from the pump and the...
  24. M

    6L80 Help Needed!!!!

    Agree with Nick, 200k is a good run. Time for an overhaul. Most reputable shops will replace everything to avoid future problems or a comeback. It isn't work doing a partial job. I think you can get a GM trans for a little less, and it does come with a warranty, but no real upgrades...
  25. M

    Installing "2021 PPV" style 6-Piston Brembo Front Brakes on a 2007 Yukon Denali

    Excellent! BTW, No way I could work in the garage with stylish white shoes and not cover them with dirt/grease.

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