r/Cadillac • u/jhoke1017 • 2d ago

How has GM not fixed the 10-speed?

I genuinely don’t understand how this transmission is so bad? I had the dreaded valve body issue, and instead of waiting on a list 3500 deep, I got a full OEM transmission swap as I am still under warranty.

The new one still occasionally lurches when downshifting, and consistently hunts for gears.

How has GM stayed competitive when their transmissions are just….bad? Even my Ford with the same 10 speed is significantly better.

17 Upvotes

90% Upvoted

49 comments sorted by

View all comments

3

u/_k_b_k_ 2d ago

This is especially sad because it's not that difficult to make a good transmission. The ZF 8HP is brilliant, fast and more than enough gears.

1

u/jhoke1017 2d ago

As another poster said, it’s all in the name of saving a fraction of a gallon at the pump. Just an ass backwards way of doing things.

That’s before I even get into the fact that forced induction requires 93 octane which costs $1/gallon more around me, wiping out any “savings” that was saved over a NA motor.

1

u/Low_Basis1931 5h ago

It wasn't about you saving money. It was an attempt to meet Corporate Average Fuel Economy Standards (CAFE).

In 2012 the federal government set Corporate Average Fuel Economy (CAFE) standards for passenger cars and light trucks, requiring them to achieve a fleet average of 54.5 miles per gallon by model year 2025.

In order to keep selling 6.2l supercharged land yachts they needed every mpg possible to comply with the rule.