[potato3732842]

Costs drop like a rock once vehicles get old enough that they can't be financed, which means dealers won't sell them, which means they won't be bundled with 3rd party warranties and service plans, which means that the owner will be the one paying and there's actual pressure to control costs (because the owner has no party down the line to pass costs onto).

For example, for the longest time Nissan CVTs were "nonrebuildable, send it back and buy a reman" now any idiot can rebuild one for under a grand in parts.

4L60 and E4OD rebuilds were also $$$ for a long time now they're dirt cheap too.

[topspin]

I wouldn't cite the 4L60E in this argument. It's an ancient design, as Wikipedia puts it, "The 4L60E is the electronically commanded evolution of the Turbo-Hydramatic 700R4, originally produced in 1982." The 700R4 is a THM350 from 1969 with an additional overdrive gear.

I'm not writing about 50+ year old platforms, around which a huge market of suppliers and technicians has evolved. The ICE transmissions GM sells today are vastly more complex, with zero design commonality with the classic stuff, and enjoy none of the benefit of long adoption that make the classic stuff cost effective. Further, and this is the important part, because the lifecycle of everything ICE is much shorter now, measured in years as opposed to decades, they never will.

So ten years from now, when your circa 2020 10L60 dies, there won't be a transmission shop in every town that's equipped and stocked to deal with it cheaply. The cost will be greater than the value of the vehicle. And that's my point: these vehicles are not going to be economic to operate out of warranty.

[potato3732842]

>It's an ancient design

My ass.

You can trace all these designs back forever. It's more "inspired by" than actual incremental revision in most cases. There is just about nothing but some vague shapes that look similar and maybe some bolt lengths that are common between a 4L60 and the TH350 era stuff.

>Further, and this is the important part, because the lifecycle of everything ICE is much shorter now, measured in years as opposed to decades, they never will.

The average car on the road is lasting longer as the years go on. People said the same things when fuel injection came out.

>So ten years from now, when your circa 2020 10L60 dies, there won't be a transmission shop in every town that's equipped and stocked to deal with it cheaply. The cost will be greater than the value of the vehicle.

I'll take that bet. Modern transmissions are stupidly easy to rebuild from a skills point of view because they replace all sorts of mechanical adjustment with "hurr hurr we just PWM the solenoid to make it go BRRT and if the BRRT is too rough the computer algorithm will turn it down". Yeah there's more components, but those are easi.