What is the most common problem with the transaxle ? on 1999 Buick Park Avenue

the car will not move forward or backward.

this is the first time with this complication

this car otherwise is in very good condition

Asked by for the 1999 Buick Park Avenue
seek a free diag and est from aamco then ck prices
greg's auto

thanks for the advice on how to handle my problem . Bobby J.
1 more answer , 1 more comment
Check the fluid level Low = top it off; Normal = have transmission shop check it.
thanks for the tip on checking the fluid level.