5w20

This would be mine! I couldn't find this particular TSB but have copied your info. Thanks!

@svtenthusiast or anyone....is the PCM TSB your ref... TSB 12-8-23, dated Aug 28? Thanks!

got my repair done this morning....approx 2hrs and left w/a full tank of gas. I told them to forget the free wash and vac, it wasn't dirty.

Thanks for the info and link.

To install a after market receiver hitch, will the rear facia have to be replaced? I noticed on factory OEM option, the facial has a cut out.

It works pretty well to. Shifts are solid and right now. It's as good as the one on my C6 minus 227 HP.