I have a tranny problem. I have a 95 blazer 4l60e tranny that i had to rebuild due to no reverse. i drove it like that for a year until i hauled a load of bricks. After that it would not shift out of first gear. So i took it out and rebuilt it. Got it done put it back in and now it won't shift out of first still. I cleaned the valve body and pump. Had to use the old torque converter due to money but there was no metal shavings anywhere in the tranny. i haven't got any godes yet. Can anyone help. If you need any more info just let me know

 

There are so many things that you can do wrong in the rebuild process...

The fact that you did not cure the problem with the parts you replaced in your rebuild helps.

Checks - Causes:
Control Valve Body -

• The 1-2 Shift valve is sticking
• The spacer plate or gaskets are mispositioned or damaged

Case -

• The case to valve body face is damaged or is not flat

Shift Solenoid Valves -

• Stuck or damaged
• Faulty electrical connection

2-4 Servo Assembly -

• The apply passage case is restricted or blocked
• Nicks or burrs on the servo pin or on the pin bore in the case
• Fourth servo piston is installed backwards

2-4 Band Assembly -

• The 2-4 band is worn or damaged
• The band anchor pin is not engaged

Those items in bold italic are the things I would check into. The other items do not seem likely to have happen or to make it through a full rebuild.