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  1. Knagawa350

    2ML70 Rebuild

    it was a service bulletin/memo and it was released 2010 if I remember correctly that said it was a free reprogramming of the transmission until 2011 at some point. Are you the original owner? Asking because my roommate has a 2016 Cruze but it looks like a 17 and has some shit from the 14-16 or...
  2. Knagawa350

    2ML70 Rebuild

    I had it book marked only this far actually, I was awaiting your confirmation Ahahah. I’ll call chevy tomorrow morning and see if they will run it, there is supposed to be a software update available too which should prolong the clutch life. I completely forgot until now that I read an article...
  3. Knagawa350

    2ML70 Rebuild

    I was thinking about that, but starting the motor will run the pump applying immediate pressure as the input shaft spins while warming up. I’m thinking start her up, wait for it to warm up all the way which should warm the fluid in the transmission as well before purging, then once warm run the...
  4. Knagawa350

    2ML70 Rebuild

    Amazing! I’m buying it right now. That is awesome, the manual says thart the car let the transmission warm up then cycle through every gear selection for 3 seconds each 3 times starting from the bottom to clear air bubbles from the clutches, then reset transmission adapt. Then I should be good...
  5. Knagawa350

    2ML70 Rebuild

    It doesn’t need to be flashed with new software, just needs to go through a relearn adapts process to know where the clutches are and purge all the air from the system. No sensors or control units were changed so nothing needs to be flashed.
  6. Knagawa350

    2ML70 Rebuild

    To be honest I did everything by the manual and with advice from an engineer that specializes in heavy equipment transmissions, but even he said it’s 50/50 that everything went off without a hitch. The only way to get the best percentage of success will be reprogramming the transmission control...
  7. Knagawa350

    2ML70 Rebuild

    Took a little finesse with the trusty rubber mallet but everything is back where it belongs. Can’t get a lift until Monday and Tuesday to install back in the truck.
  8. Knagawa350

    2ML70 Rebuild

    Fair enough! I think I’ll stick to regular oil changes and replace the head if it ever ends ip going that far. Mine Tahoe 4x4 and I plan on only driving in 2wd unless I’m putting it in 4wd. From my experience with other vehicles, when left to make decisions on their own they don’t do what I want...
  9. Knagawa350

    2ML70 Rebuild

    Update: I was able to refurbish the front/first planetary assembly with the one pulled from another used 2ML70. Sonnax makes steel single tab retaining washers for another system, I wasn’t able to find any in stock on the west coast and they are a week delivery from order date. I ordered some to...
  10. Knagawa350

    2ML70 Rebuild

    I bought ac Delco dexron six to refill with, just because the 2ML70 was a new technology for its time and came recommended. I definitely coulda/woulda Chose differently after doing more research as well as seeing the internals after tear down. I assumed (I’m the ass) that the hybrid system...
  11. Knagawa350

    2ML70 Rebuild

    So mine has 145k on it currently, the spacers on the gears appear to be carbon steel like the gears, while the retaining washers are copper, so there were shavings in the pan but nothing stuck to the drain plug magnet. Which would make sense that they wear at an accelerated rate. None of the...
  12. Knagawa350

    2ML70 Rebuild

    The one he had that fell apart was the second assembly, mine looked used but not falling apart the washers all have the retaining tabs in place
  13. Knagawa350

    2ML70 Rebuild

    First picture is what the retaining washer is supposed to look like, second one is worn. Sonnax is a parts company that has a sister company in Portland (Transtar) who had the 2ML70 washers on their website. Sonnax also said they had them, but differed me to transtar. They didn’t have them and...
  14. Knagawa350

    2ML70 Rebuild

    Clutch discs were fried, also the sun gear planetary system pins were torn up and fell right out as well as the the locking spacers. They are hard to find, a used transmission shop here in Portland had a 2ML70 used in the warehouse, they are pulling the assembly for me to see if I can rebuild...
  15. Knagawa350

    2ML70 Rebuild

    It’s just a hoop with three hooks and a place to put a chain. Got some hooks and connectors to make the same thing with a chain. Ended up having to wedge the casing under a lift arm to hold it down while using a cherry picker to add tension, while tapping the casing with a rubber mallet where it...
  16. Knagawa350

    2ML70 Rebuild

    So we made some progress lifting it and hammering around the outside of the transmission, but not fast enough. Going to a hardware store for a pulley system to use the lift to slowly pull the the motor from housing while flat on the floor. Planning on chaining the trans down to one leg have the...
  17. Knagawa350

    2ML70 Rebuild

    Also oddly enough the torque dampener (since it is jot a converter) is magnetically stuck on to the front by the 1st position drive motor.
  18. Knagawa350

    2ML70 Rebuild

    So caught a snag getting the first electric drive motor out, it takes a specialty tool that is around 1k, so looking into at home shop techniques ie. A chain and some s hooks attached to a motor jack.
  19. Knagawa350

    2ML70 Rebuild

    Update: transmission is pulled and on the shop table, I had to leave for work so tear down and rebuild will be tomorrow along with install. The service manual is not ideal for steps to removing transmission, ie. front sway bar needed to be removed to remove the front drive propeller and some...
  20. Knagawa350

    2ML70 Rebuild

    Awesome! I had not seen this yet, I appreciate it! All the parts will be in by 9pm, I get off work at midnight and I’ll be posting pictures of what they look like in the packaging.
  21. Knagawa350

    2ML70 Rebuild

    Used a scanner and road test both at the Ron Tonkin Chevy dealership in Portland Oregon, code was: P709D? I can confirm and send a photo of the paperwork when I get home tomorrow morning
  22. Knagawa350

    2ML70 Rebuild

    Hey all! I have an ‘09 Tahoe hybrid, the 2ML70 is slipping the 1-3 clutch and 4th clutch. Chevy is only offering to replace it for 6k and up to a year for the part. All the transmission shops in Portland told me kick rocks and I won’t find the parts. I got this truck a week and a half ago, and...
  23. Knagawa350

    2008 GMC YUKON HYBRID Transmission/from AZ

    Website is definitely sporadic, but Its giving me the option to print, so I’m about to go spend $60 bucks on paper at kinkos for this info to be organized for me. Chevy ran diagnostics for me and let me know it’s the 1-3 clutch and 4th clutch slipping. It feels correct what they’re saying...
  24. Knagawa350

    2008 GMC YUKON HYBRID Transmission/from AZ

    I’m attempting a rebuild myself, I found a website (alldata) appears to be 2ML70 specific.
  25. Knagawa350

    2008 GMC YUKON HYBRID Transmission/from AZ

    Did you end up getting it? I can’t find anyone to rebuild mine either, I bought it a week ago and found out I was screwed. I’m going to attempt myself at a DIY shop that has all the specialty tools, lifts and everything you need. I found some parts from an OEM GM surplus dealer SMC performance...

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