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  1. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Next step is to reinstall the exhaust. I put some high temp nickel antiseize on the exhaust manifold down pipe studs so I can do this again in the future. I installed new manifold to down pipe seals before pushing the down pipes back up into place at the manifolds. For the driver's side, it was...
  2. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Next step, install the new transmission pan with the welded nut and drain plug. I require a drain plug the automatic transmission pan of any vehicle I own. Whether it had one to begin with, or if I have to add one as I go. My plan was to have my machinist weld a nut to the bottom of this pan...
  3. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Installing the valve body was a real treat... I was concerned with aligning the bushings for the center seal stack on the valve body with the seal stack installed in the transmission case. Because I had to install the back of the valve body first to engage the electrical connector, then tilt...
  4. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    One more step before I could reinstall the completed valve body back into the transmission case. I had to install the other half of the Sonnax Center Seal Support kit. I installed the four steel bushings that were grooved into the transmission case. No brass block here, as the bushings sat in...
  5. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Now that the TECHM was done, next step was to reassemble all the various parts back on the valve body. I followed the reassembly steps in the Sonnax ZIP kit instructions, paying attention to torque spec and sequence. Valve body with the TECHM and position switch reinstalled. Valve body...
  6. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Next step after rebuilding of the pressure switches was replacement of the shift solenoid filter plate. I purchased a new GM 24236934 Plate Kit, Control Solenoid Valve Filter. Note: I researched this on gmpartsgiant.com. Beware, there are a couple of different versions of this filter plate...
  7. skpyle

    Pad and rotor upgrade? Whats the go to?

    Sweet. Good to know. Thanks!
  8. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Scalloped underside of the actuator. The actual pressure switches themselves, under the seal, disc, and actuator. The Sonnax pressure switch rebuild kit and tools set I bought off ebay. You really want the tool kit. Cough up the $35 or so it costs. Listen, I don't care how much of a Billy...
  9. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    This is one of the main reasons I went through all the effort to pull the valve body out of my 6L80 transmission: to rebuild the pressure switches. Mine worked fine, but I wanted to go ahead and rebuild them preemptively. The round port with the sorta orangish center is one of the pressure...
  10. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Now...onto the star of the show: The TECHM!!! Here is the 6L80 TECHM in all its infamous, fragile plastic, failing pressure switch magnificence.
  11. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    With all of the necessary parts installed/replaced in the valve body halves, next step was to reassemble the halves and separator plate. I wiped both valve body halves and the separator down with lint free rags, but I did not try to get them completely dry. I just removed the still liquid ATF...
  12. skpyle

    Pad and rotor upgrade? Whats the go to?

    Thanks! I wonder if they were talking about adapting the larger rotors and 4-piston calipers from the front of the 2021 Escalade to the 2007-2014 GMT900's.
  13. skpyle

    Pad and rotor upgrade? Whats the go to?

    Can you elaborate on the 'T1 brake configuration, 4-piston front calipers'? I am curious now. Thanks!
  14. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Ouch!
  15. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    1986.5 Porsche 928S My Red Witch 5.0L DOHC water cooled V-8 For relevancy to this thread, here is the Porsche A28.07/Mercedes 722.3 4spd automatic transmission with pan removed. I have several threads going on the Red Witch over on Rennlist.com.
  16. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Next step was to install the Sonnax Checkballs. From what I understand, the OE plastic checkballs can deform and get hung up on the separator plate. Sonnax checkballs are 'imidized' plastic. They are supposed to wear better and resist deformation. I threw away the 7 OE checkballs from the valve...
  17. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Random interjection: earlier, when I was talking about removing the valve body screws, I could not find any decent photos of the EP10 Torx Plus headed screws. The Sonnax ZIP kit instructions had a good image of them, and the socket. Screenshot of Sonnax ZIP kit instructions referring to the...
  18. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Next step was to install the Sonnax TCC Regulator Valve kit. The instructions stressed assembling and orienting the new valve components correctly as per the diagram. Screenshot of TCC regulator valve kit instructions showing assembly and orientation. Same as before, remove retainer, end...
  19. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Next step was to install the Sonnax Clutch Select Valve Spring kit. However...I did NOT do this. Because the ZIP kit instructions told me not to. This spring kit is for mid-'10 and earlier 6L80's with the earlier separator plate. My 2013 6L80 had the updated separator plate and revised springs...
  20. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Next step was to install the Sonnax Actuator Feed Limit Valve. Again, valve held in place by a retainer. This time, the spring was on the outside of the valve, up against the retainer. Had to be careful to hold both 'sides' of the spring when pushing in to free the retainer. After I got my old...
  21. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Very good point!
  22. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    That is not a bad idea. Take your time, take lots of notes and photos as you go. Do plenty of reasearch before you tear into the transmission. Learn as much as you can about disassembly and reassembly. Factory and aftermarket rebuild manuals are a must! It is scary, but doable.
  23. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    I did not do a full tear down disassembly of this valve body. I did not really see any sludge or crud, so I did not see the need to pull out all the valves. I only pulled out what was instructed in the Sonnax ZIP kit. As well, I did not use any brake cleaner. Which kills me, as I love brake...
  24. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Thank you!!!
  25. skpyle

    6L80 Sonnax ZIP Kit, Pressure Switch rebuild, remote filter install, and fluid flush in 2013 Escalade ESV (Pic heavy)

    Yessir! You are quite welcome! This is my first GM SUV, but not my first gearhead forum experience. I am going to be a useful, contributing member. My documentation will be useful to others, because that is how it has been for me over the years. You take when you can and you give back when you can.

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