Quote Originally Posted by Krazikaptn View Post
Guys, I read a lot of comments here, but I have a question, can the TCC and remaining solenoids be replaced in a 1999 Grand Prix with a 4T65HD-E transmission in it while the transmission is still in car?
I have read all types of comments about the 4T65-E with the small "cover that can be removed to expose the solenoids, but this being the HD version, the driver's side is one complete cover that has to have the axle removed (along with a long list of other items) to allow access.
I haven't actually done this job yet but just judging by BillBoost write up and picture at the beginning of this thread I don't think he is removing just a little cover to access solenoids. Re-read the first page of this how to. Pretty sure he is covering exactly what you are talking about if you read carefully. Hopefully the author will chime in here too...

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