Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

DTC P2534 is a type A DTC.
The TCM commands maximum line pressure.
The TCM commands an immediate landing to 2nd gear.
The TCM freezes transmission adaptive functions.