2ML70 Rebuild

[Knagawa350]

seems all the new LT engines are failing left and right with long wait times for replacements. so I'm not surprised the dealer looks packed. throw in these new 10 speeds seem to be randomly eating themselves alive. it's a heck of a time to be a tech for gm getting paid warranty rates.

I did know about the engine problems, and transmissions, just didn’t realize they got paid differently. No wonder they didn’t want to touch the Tahoe ahah. Also they were worried they would run it and not work and I wouldn’t want to pay.

 

[j91z28d1]

they tend to get paid less than for warranty work than non warranty work. but most techs would rather throw parts on a car then troubleshoot because of the money too. like say they can throw a alternator on a car in 10mins and make 2 to 3 hours off it. warranty would pay 30mins for the job.

 

[BG1988]

It looks like they made it pretty universal to swap out the tail piece on a 2wd for the tail and transfer case on the 4wd. You might have to swap out propeller shafts also, there is only one through the entire transmission. I think they tried to keep everything as cheap as possible through the whole series l, so I would assume that just aux pump which probably runs on 12v anyways is the only difference but don’t quote me.

Yes It has a Power converter from 12v+ to 14V+ 3-phase

 

[DLM_GT]

Hey OP! Fellow failing 2ML70 owner here. This whole thread is great, can’t find anyone online who has done what you’ve done. Hoping you can have he rolling soon.

 

[j91z28d1]

Hey OP! Fellow failing 2ML70 owner here. This whole thread is great, can’t find anyone online who has done what you’ve done. Hoping you can have he rolling soon.

that's not good. out if curiously, what's yours doing? mileage and maintenance?

 

[j91z28d1]

so looking around I had a tsb I had saved that happed to have the part numbers for each year tranny. plugged the part number into Google for the 2010 and up 4wd, as that's what I would need. and one came up as reman from gm. $7k is pricy but guys are spending 6k for the normal 6 speed rebuild tranny these days. so for a hybrid tranny that would go about 250k with fluid changes, that doesn't feel horrible.

 

[j91z28d1]

@Knagawa350 I'm scared to bump the thread and ask, but curious if ever got anywhere with it.