Cadillac Repair: 4l60e, test procedures, e mail

Question
I have a 96 Blazer with a tranny problem. It will not go into 3rd or 4th gear. 1st works when in drive or D1. 2nd works when in D2 only. It has a p0758 code. Any ideas? I know your listed under Cadillac but am hoping you will help as everyone else is "on vacation or "busy". Thanks!

Answer
The first thing I would look at it is GOVENOR.

If you are mechanicaly inclined or know of someone who is, You will need simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.