I am trying to assist my bro-in-law with obtaining a part. The car is a 1991 Cadillac Sedan DeVille (4 door), 4.9 L 8 cyl engine with a 4T0E Auto Trans. The car is leaking trans fluid and He needs to replace the transmission oil pans, including the SIDE trans pan. We have tried high and low to look for the side trans pan with no success. I know very little about cars while he knows little about computers!! With my limited knowledge I have tried various car part sites and even spoke to some. All were trying their best to help but no success.

I finally saw this forum and registered. I am turning to the members of this wonderful forum for help. Does a '91 Cadillac DeVille have two pans, including a side pan? If so where can they be obtained? The car in question is still a terrific car. Please help!