my 2000 didn't have drain plug!!! I don't think Cadillac catera have two plugs , only one that on the side of panTry not to open another thread with same topic as the one you started about the tranny. This video stats there is 2 plugs on our 4l30 e series tranny. Watch http://youtu.be/0osUS9JEbR8
Thats weird man wonder I wonder why they didn't use the same pan with the 2 plugs on all installs with all GM cars & BMW's using this tranny.my 2000 didn't have drain plug!!! I don't think Cadillac catera have two plugs , only one that on the side of pan