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Q:

shifts hard on 2004 Buick LeSabre

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
the car will run rough when it is idling and stall, also when I am driving it it shifts hard, any ideas
(1) Answer
(2) Comments
the shifting hard may be from a broken accumulator spring which is common. a trans shop can verify this for you and give you a bid.

the stalling, it may be a vacuum leak or a bad idle air control valve. you can also have the shop verify this for you.

Roy