Sometimes, finding the cause of a complaint isn’t as straightforward as one would expect; sometimes, these causes can be very elusive.
John Griffin confronts a 5R55E unit with oil-pan bolts wiggling such that the pan is shifted past the mating surface of the block.
This article addresses special tools relating to 5R55E and 5R55W/S transmissions. If you have worked on these units, you’ve already discovered how difficult it is to isolate slip codes and TCC problems. These tools are specific to the 5R units, but you can use your design creativity, a cut-off tool and a drill to make test fixtures from other parts as well.