Is it common among Bonnevilles to have faulty TCC solenoids? I had my transmission rebuilt a year ago, and now the SES light code is saying I need the solenoid. Should it have been replaced when the trans. was rebuilt? Because I am taking it back to the same people, and I was wondering if they should have replaced it and didn't? Its going to cost me a lot, and I want to have all my facts straight. :(

I got the same problem , mine wont go into 4th!
Screw that , I'll beat my tranny till it'* worth it. Turns out if you act really ignorant to the repair guy , he'll do a better job than ever. If he tells you the part is extra , tell him a rebuild is a rebuild and act like a bully , he should've told you about it anyway !

Not a bad idea, except the guy is a friend of my dads, and gives me a decent deal for the work. I trust them, and they seem to be very thorough. Mine won't go into 4th either, or more like it goes in at first and then comes out. I wouldn't be worried, except that I drive it a lot on the highway, and my gas mileage is not so good right now. It is actually being repaired Monday. My estimate was $300.00-400.00. But I was told as usual I would get "A deal" of sorts. Guess we will see. Your computer didn't go bad by any chance when you first noticed this problem did it?

Thisis what happened to me

my TCC would not hold properly from 210,000 km, and a strange jerking sensation and buzzing noise would accompany it. best i could tell it was a valve body leak or something.