Looking at a 2002 LC tomorrow and the seller says that the transmission slips in second and shudders up hills unless put into L. It hasn't thrown any codes and the fluid came out clean. Assuming these are all true, what could cause this issue and is this common? Did a brief search on here and couldn't find anything specific. I was hoping someone can throw some information or experience my way and I could check for things tomorrow to hopefully narrow down the issue. Thanks.