Hi,I just joined the site.My son has a 93 fullsize Blazer for a first vehicle.We'er haveing problems wiht the trans,a 4L60e.It dose'nt slip but shifts slow with the RPM's going up between shifts.I toke the pan off and didn't see anything out of the ordenary except a ball bearing,a little smaller than a 1/4 inch.the trans shop fells pretty sure it's a check valve ball.dose anyone know where I can find a manual or online diagram of the trans so I can repear it myself.
thanks railguy

 

Search google for diagram of 4L60e trans I know the search result will show what your looking for.

 

4L60E Reference Material

http://img292.imageshack.us/img292/7...ecommonah3.png

https://www.wittrans.com/Schematic.a...0E/4L65E/4L70E

and then

https://www.wittrans.com/Schematic.a...0E&Schematic=8

https://www.wittrans.com/SchematicPa...LinkCode=741-5 (check ball)

It seams to be the tranny check ball. It suppose to be inside hydraulic passages. If it is out... cracked separator plate or even worse.. so you are loosing hydraulic pressure... and shift became harder (leakage means pressure lost means more time to get pressure means...

So, you could try to remove pan and check separator plate and try to fix your self or send it to tranny shop. Oh, there are 7 check ball inside tranny... don't lose them!!, they need to be there:

Hard Shifting Automatic Transmission: Accumulator Shift Feel

 

Thanks alot guys great info I'll let you know how thing go.I can't do anything for a couple days on account of the storm and work.I'm sure this will help alot.
Thanks railguy

 

That is so strange I have know a check valve to come out of valve body.

 

Maybe you can google search it.

 

The Auto is gone.I put a NV3500 Manual in.So I have a few more questions.First the switch for the Transfer case That sends a signal to the front end to engage the 4 wh drive only has 2 wires"it's from a 91"where my old one has 3 wires.I need to know what the middle "blue" wire is for.Next the idle is running high 1500 rpm but setteling down eventually.Makes it kinda hard to shift.It's electronic throttle body injection.Can the computer be recoded for the manual trans?I also have the computer from the truck the NV3500 came out of.The transfer case came out of another truck.The clutch, presure plate and fly wheel came from still another one.The wires for the 4l60e are still there I didn't do anything with them.Any help would be greatly appreciated.
Thanks railguy