Is a ZR2 automatic transmission case the same as a case out of a s10 Blazer. My case has a ZR2 stamped on the back of it. 2001 ZR2 Blazer. My mechanic told me my case was warn out and it needed to be replaced. It's not cracked or anything. Has 200,000 miles on it.

 

I believe it is: But I need to really hear some other reliable sources as to their opinion!