Hi, I just got 578E (transmission oil wear) error on my GM transmission and thinking maybe it's not worth changing transmission oil and filter? Maybe its good time to swap GM with 6HP21? (although my GM is working ok)
I am wondering how big is a difference?
According to this post:
https://www.xhpflashtool.com/blog/co...m_gm_to_zf6hp/
Quote:
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... it's pretty easy to swap your GM unit for a ZF and take advantage of an immense performance and fun gain. We're not shy to say, you won't recognize your car again. Some might disagree, but even if not "xHP-ed" the ZF is superior to the GM in many aspects ...
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Anyone swapped GM to ZF6HP21? Was it worth it?