transmission replace

Look if the cross member is held to the body with four large bolts. That is the most common way GM does it. Unbolt the upper strut mounting plates and steering shaft, then drop the engine and transmission with the cross member. It is critically important that those bolts be marked in some way so the cross member can be reinstalled in the exact same orientation. On Chrysler products, and most other cars that use this style, the bolts are specially designed to locate the cross member, so it can't be messed up. With GMs, the cross member can be slid around before the bolts are tightened. Reinstalling it off-center as little as 1/16" will result in an extremely miserable car to drive. It will dart to either side with no "predictability". If that happens, the cross member can be adjusted during an alignment, but you should specify the need to set "steering axis inclination". That is measured automatically by most alignment computers, but we never bother to look at it unless there is a need to.