NEED HELP WITH NOISE
Just a brief history: I replaced the Engine and trans in my 95 SE with a unit I got from the Yard. After it was back together I had a whining type noise which sounded to be coming from the trans side pan area when the trans was in Park. The noise seemed to go away when in drive or reverse.
I decided to replace the transmission with another unit that was rebuilt (gm cert) sticker. After putting it all back together the noise remaind .. Maybe a bit less then the other unit but it is the same whining type noise and only in Park or neutural.
I replaced the side pan, filter, and three seals on both transmissions before putting them in the car. The motor seems to run fine (50K) miles on it ... I did replace the rear seal and oil pan gasket on it before installing it.
I checked all the vacume lines, replaced most of the fittings and lines. The car has no error codes and the transmission seems to run fine ... Just have this whining sound when I put it in park. I did check the O-ring on the PCV valve and it is in place.
Anyone have any ideas??? Anything I should look at? Any ideas on how to find the problem??? Please help!!!
I retightened all the bolts and checked for exhaust leaks but everything seems fine.