Hard Shifts Only when Hot. Pressure Control Solenoid?
I got an 07 Cobalt 2.2 auto trans.
About two months ago my car started shifting hard when i went from Park to Reverse or park to drive. When it switches gears when im driving (2,3,4) the car sort of 'hiccups', worst going into 2nd and barely recognizeable going into 4th.
The car does not shift hard however when idle if the wheel is turned all the way to the right, or if im going from reverse to drive. When it does shift hard, the whole motor moves.
Like i said, it only does this when the engine has been running, on a cold start i cant feel it. Car seems to be shifting fine other than that, no grinding/slipping.
I took it to a shop and the guy said he ran a code and got a bunch of O2 sensor problems and a trans problem that if i replace the trans for 1600 all the problems will go away.
So i take it to a trans shop, the guy looks at the paper the other dude gave me said it could be the (Pressure Control Solenoid?) which is on top of the trans and that would be the fix if the code is correct, but didnt investigate further.
Im reluctant to replace the trans if the second guy is correct, and i think the first dude is trying to get me to buy an entire trans.
Just wondering if any of you had this problem before or know what it could be.
BTW, havnt replaced tranny fluid since i bought it (3 years), fuel filter is going bad which i have to have replaced, engine light is on, if any of this helps. Thanks.
EDIT: Ill also add that the shifting hardness seems to be affected by how hard i accelerate to. If the RPMS are high, it shifts fine, if i keep them low, it jerks a little, if i press down normal it shifts hard.