Years ago I was told GM pressed the pickup into the pumps so hard and fast that they galled together enough not to come out easy. If you do it in a tapping in sort of way, it needs a spot weld or a bolt on attachment.Pretty sure my problem was the pickup coming out of the pump, on the way home I was trying to recall if I had tacked it in...or not. Probably not. Then I got to thinking about how many million of those GM had shoved into those pumps without a problem. Anyway, one more thing added to the project list. It was a pretty bad week, I must have done something to deserve all of that.