Transmission rattle anyone?

[quote author=thereisnospoon link=topic=59738.msg1011587#msg1011587 date=1160891475]
I have noticed an increase in the amount of times my transmission seems to give a quick rattle noise whenever I take my foot off the gas.  I have absolutely NO reduction in performance.  I love my V6 SEL - the thing flies, has smooth shifting, and is a wonderful car.  Gas mileage is even beginning to come up....I was getting 13-15mpg on average but it is now like 18-20 now that it has 7,500 miles on it.

The rattle part just bothers me because it seems to be something that is almost increasing in frequency and just about happening every time I take my foot off the gas.  The rattling noise can last from a split second to 1-2 full seconds.  I do not notice the same rattle whenever the car is NOT in drive and I rev the motor.

Does anyone else have something like this that they have addressed with their dealer?  If they have, what was it?  I dont think it is anything major, but it is starting to get on my nerves.

Thanks,
[/quote]

I would have to say your gas mileage reflects a huge problem, I have SELV6 run it hard 5 hrs a day NEVER get less than avg 23.  I find it hard to imagine you ever getting 13 to 15 unless you were driving with flat tires.. I would have taken it in....... Poor fuel milage :shock:.
Rattle=shop,rattle=shop

[quote author=jaydez link=topic=59738.msg1013522#msg1013522 date=1161017359]
Gas milage should be over 23?  My SEL v6 averages 21.5 MPG with 75% of my driving highway... my dealer said it was normal.
[/quote]

Not to flame your dealer....but I get 23mpg average. Last tank 24.5 I go by real gallons used @fill up, Div by miles.
With that said, my display concurs with my math. 75% highway= 21.5mpg not normal in my book for this engine,
unless your tires are bald from...... :lol:   I have averaged  28mpg traviling no problem. I have clocked 8,000 miles.
I don't lie on my taxes or gas milage  8)