I have a 2001 grand Prix gt and every now and then when driving the car starts shifting hard and make a loud wine. The nosie gets louder if you rev it up and when accelerating. Goes away if the car si

Should take it to a repeatable transmission shop to have checked out.

Would you happen to know where the shifting solenoid is located at in the transmission

I know about all problems these trans can cause by what I've read. Would it be easier to just get a new trans or have it rebult at the same time?

How much does that cost?

I can't complain to much cause it has 185,000 miles on it. For a while it only did evry now and then. Now it's starting to do it more frequently. It will only do it once the engine temp gets close to 210. Does that solenoid have any codes that can come up?

Sometimes it will give me check engine lights but nothing seems to be wrong with it. It won't start acting up till a few weeks after those lights come on

Never thought to get the codes the past few times it came on. Had it read once and it was a code for the egr and just thought the check engine light is for that valve

There has been a few times and I start the car and put it in gear and its stays in park. But the shfiter will say I'm in reverse, drive......

Is there any way to keep this from happening for a while like by adding a additve to the trans fulid or something