2001 cadillac deville 4T80E problems
I am working on my 2001 cadillac deville. I had a tcc problem. I replaced the tcc and the harness. everything worked out good. I had a leak in the side pan so i tore it back down and replaced the gasket. Then added 5 quarts of fluid and started the car. I noticed it pushed some fluid out the filler hole and then it would not go into gear, nor would it take fluid. I found the pump shaft twisted and broken. I have gotten another one but would like to know what caused this. If anyone could advise me on this i would appreciate it. I don't have alot of experience with automatic trannys. The transmission is a 4t80e.