Transmission thumped under acceleration and lost all but first gear.
What is your question?
First gear will not work in DRIVE but will work in the 1 and 2 position. Reverse is also out. The car has about 160,000 mi on a rebuilt, updated Delco trans. I was accelerating on a freeway ramp when the thump occurred followed by the engine free revving while the trans was in the Drive position. There was also some smoke under the hood though I could see no leakage, and the trans fluid level was good.
What makes this problem better or worse?
Nothing I know of.
How long has your 1993 Buick Park Avenue had this problem?
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