What gets replaced with new transmission?

JARblue

I believe you will get a new OEM CSC. My understanding is the CSC is supposed to be replaced each time you drop the transmission.

You might want to consider purchasing the heavy duty aftermarket one and have them install it instead. Although another thing to consider is when your clutch might need replacing. I don't know whether the heavy duty CSC can be reused, so if you have a lot of miles on your clutch and think it might need replacing in a year or two, you might be better to let them just use an OEM CSC and then go to the heavy duty one when you replace the clutch. My plan is to replace both the clutch and CSC with aftermarket parts when one fails first regardless which one it is.

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