Shifting Problems Grand Prix 2001

[mkuquvr]

I have a 2001 Grand Prix GTP Supercharge Special Edition 3800 4 speet auto transmission.
When I accelerate and let the trans. shift,the car is sluggish and slow to go. If I manual shift it,I can accelarate better yet not correct.The fluid is full and is clean. Can anyone help? Thank you.

[jml755]

Sounds like my '01 GTP at around 43K miles. Ended up with a trans replacement when it got worse and worse. Though, it's been a long time and I don't remember the details of the symptoms.

[Scrapper]

Originally Posted by mkuquvr

I have a 2001 Grand Prix GTP Supercharge Special Edition 3800 4 speet auto transmission.
When I accelerate and let the trans. shift,the car is sluggish and slow to go. If I manual shift it,I can accelarate better yet not correct.The fluid is full and is clean. Can anyone help? Thank you.

i would still change fluid and tranny filter then take a magnet see how many shavings to got in old tranny fluid and if you find chunks time for tranny hope not.

good luck..........

[tblake]

Sounds almost like a cat converter issue. How many miles are on your car?

See this post regarding cat converter warrenty on your car.

http://www.automotiveforums.com/vbul...d.php?t=681283

[mkuquvr]

I will give it a try and with hope I do not have to put my other trans. in. Thank you for you advise and time.