hurst2001

I have a problem with the trans kicking real hard you can feel it thur the floor board i was wondering if anybody had the problem its a automatic ,when it shiifts from 1to 2 you get that hard kick like a shift kit was installed ,the car has about 90.000 miles on it so i was just wondering before i bring it to dealer ,can chevy manger on this site chime in thanks .....

badassbowtie

mine shifts hard when its cold. once it warms up its fine. 07 2lt almost 40k not sure if this helps you any though.

Greybeard999

For severe duty the manual says change auto trans fluid and filter at 50,000 mile intervals.... (50,000/100,000/150,000) non severe duty never needs changed (I doubt that but I just checked the manual and so it states)

At 90,000 you may want to have that done just for safety sake..... I never liked old tranny fluid personally. Also have you checked motor/tranny mounts? If you can feel it through the floor boards maybe the assembly is rocking around......

I'm only at 24,000 and I wish mine shifted a little harder myself, but not like that.

sleeper

You don't by chance have a small tranny leak, do ya ?

txbass06

If you can, check the wiring harness that runs across the top of the transmission. A friend of mine has an '07 that was doing the same thing and there was a harness lying on top of it and had rubbed some wires to the bare metal

hurst2001

thanks for all the reply's im going to take it to the dealer it is weird like someone put in a shift kit or something it also has 950000 miles on it never change fluid but did check it out fluid is red,no leaks . i have no check engine light my first thought was a shift seliniod..

Big Kahuna

I was thinking the shift solenoid as well...

My fiance's HHR is doing the exact same thing... engine light comes on for awhile then goes out... Hard shift between 1st and 2nd. She has an automatic as well with close to 80,000 miles.

She ran it by AutoZone for a free engine light check and the error report said it was the shift solenoid. Not the transmission.

Going to get it replaced soon...

hurst2001

update: Well i did get a check engine light on what happen after my wife got a oil change they left the air hose off the air box that holds the air filter which Threw a code po 171 running lean so i guess this will also throw your trans shift off too trying to adjust,well anyway i put the hose back in and made sure it tight and then pulled the neg cable off the battery for 30 min to reset the computer, all is good for two days now trans shift great and no cel either ..so this will solve the problem ...

Greybeard999